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The Ultimate Soap Recipe!

Sharon has been making and selling soaps and personal care products for about five years.

Looking for a Really Great Soap Recipe?

Here are a few soap recipes—some good, some not so good—presented along with my thinking about what makes a soap good. These recipes are also presented to illustrate how to develop a good soap formula.

These are just my opinions, though. Soapmaking is an art, so no one's opinion really counts for all that much—maybe least of all mine, since I have only been making soap for less than two years. But I am a recipe nerd! Fine-tuning soap qualities became my soaping "mission" early on.

I've given recipes for four soaps, beginning with the lackluster Soap #1. Most of the pictures are of the Soap #3 Recipe because this is the recipe that I've been happy to use for nearly a year. Soap #3 (again, in my opinion) is an excellent recipe, but I think the Soap #4 Recipe is better.

Here's the story of the evolution of a recipe.

The Evolution of My Soapmaking

Like most beginning soapmakers, my soapy adventures began with recipes I found online. I think this is a perfectly reasonable starting point.

Some experienced soapmakers become highly offended when beginners ask for a soap recipe. This is because, after months or years of experimentation, which cost them many hours toiling over crock pots and sweating bullets to understand lye calculators—not to mention quite a few bucks—they achieved the perfect bar of soap.

They began with a fairly simple recipe and produced many variations of it, each of which was critically evaluated—often by a small army of friends and relatives acting as testers. If The Recipe was tested and found wanting in some desirable quality, the soapmaker began another round of experimentation. So beginners who go online requesting recipes are often told to figure it out on their own—when they are not actually suspected of industrial espionage.

Anyone can make soap. You can make soap with lard, as our foremothers did. You can make soap with coconut oil, olive oil, palm oil, or any of the other oils on the grocery shelves. Some of these oils will make a perfectly serviceable soap all by themselves. (Some will not.)

And a soap made only with lard, coconut, olive, or palm oil—while it may have some defects—will beat the pants off of the detergent bars (called "beauty bars") that you will find over in another aisle at the grocery store. They'll beat the pants off of them because they are soap rather than a mixture of detergents and chemicals, which also usually contain a cheap synthetic fragrance to mask the subtle unpleasant scent of these concoctions.

Even a simple soap is much kinder to the skin than most commercial "detergent bars."

But beginning soapers who have a little experience under their belts, and have learned that they can definitely make soap, often want to take it to the next level. They'd like to make really great soap.

Coconut-Mango Soap

Coconut-Mango Soap

What Makes a Great Soap Great?

What exactly is a really great soap?

A really great soap would be a soap that makes a decently hard bar that produces a long-lasting lather that is a balance of bubbly and creamy. It should feel wonderful on the skin, not strip the skin's natural oils, and contain enough superfat to replenish any skin oils that are washed away.

Further, the oils in the superfat (and the soap itself) should be the most desirable kind in terms of skin benefits. While you can only accomplish this last with certainty by making hot-process soap—which allows you to choose your superfat—you can do this in cold-process soap to an extent, simply because the most desirable fatty acids in soaping oils are the slowest to saponify. So, for cold process, you just have to make sure that those "most desirable" fatty acids are included in your recipe in a reasonable amount.

The bar of soap should have a pleasing texture, both visually and to the touch—sort of silky and creamy. The recipe should perform well, meaning you should be able to depend on it to remain fluid during pouring and swirling. (No formula will do this every time since fragrances can cause acceleration—sometimes called "soap on a stick.")

Beyond Cleansing

While I suppose it is obvious that a great bar of soap should do a good job of cleansing, it is hard for me to imagine any soap formula that would strike out in that department. Usually, a soapmaker's main concern is to formulate a soap that isn't overly cleansing.

There are probably an infinite number of possible formulations for a truly great soap. It is an article of faith among soapers that every soaper's unique experimental journey leads them ultimately to a unique formulation of the "truly great soap."

One reason this is an article of faith is because not just everyone will tell you their soap formula.

Hint: The ingredients are usually on the label, and anyone with a fair understanding of soap qualities can run these ingredients through SoapCalc, or some other online lye calculator and figure out how these ingredients can be optimally balanced. This experiment may reveal that someone else's "secret recipe" is actually not all that great. Many of the "real" soaps on the shelves at health food stores are, from the standpoint of artisan soapmakers, rather ho-hum—because making a decent soap for selling wholesale at a reasonable price has its own special set of constraints.

It takes a certain amount of experience at soapmaking to recognize a good bar when you see one—or try one. This is partly because the simplest real bar of soap beats the pants off of commercial detergent bars and is so delightful to use that it can be hard to believe you haven't achieved the Ultimate Recipe right out of the gate. I mean, how could it get any better? I made the same basic coconut oil soap recipe over and over for about six months before I was ready to move on.

As you try different recipes, and different variations of the same recipe, you steadily become more discerning. You can feel the difference between a 5% superfat and an 8% superfat, and the difference between a soap with linoleic acid and a soap without it. You've seen enough different kinds of lather to recognize good lather, and you've critically evaluated the appearance enough bars to recognize that silky, creamy look.

The question is, how do you achieve all this?



Other Lye Calculators

You may want to have a look at other online lye calculators.

Here is the link to the MMS lye calculator:

Here is the link to Brambleberry's lye calculator, if you'd like to have a look at it:

If you look at Brambleberry's lye calculator, you can see that it is very straightforward; just fill in the blanks. To choose a superfat level—at the very bottom of this page—beginners should usually choose 5%. If you compare this page to the SoapCalc page, you will notice that on the SoapCalc page, 5% superfat is the default.

There is a very good reason for this: While all the oils you could use to make soap have a SAP value—which allows the amount of lye necessary to saponify that particular oil to be calculated in the real world, the SAP values of oils can vary due to weather and other growing conditions.

SAP values for all oils are, hence, averages. It is possible that the oils you are using do not have the average SAP value. There is no way to know unless you have access to a lab. Your oils might require more—or less—lye than the average needed. If they require less lye than the average, and you calculated your recipe for 0% superfat, your finished soap could have excess lye in it.

Avoid Excess Lye

Excess lye makes soap harsh and can burn the skin. For this reason, it is the standard practice to calculate for at least 5% superfat—superfat being the amount of fats/oils that are left over after saponification. This minimum amount of superfat ensures that there won't be any excess lye in your finished soap.

On Brambleberry's lye calculator, beginning soap makers will usually choose 5% superfat. Brambleberry's calculator only goes up to 10% superfat. While this is plenty for most recipes, sometimes you need a higher superfat than this.

Now look at SoapCalc's lye calculator. Superfat is number 4 at the top of the page. SoapCalc will allow you to choose a higher superfat percentage than Brambleberry. If you click on the number 4, SoapCalc will supply an explanation for what is meant by superfatting.

With the Brambleberry lye calculator, you simply fill in the blanks and click "Calculate." The calculator will then tell you how much lye and how much liquid (usually water) to use to make soap. This is fine if that's all you want to know.

The MMS lye calculator is useful if you want to know how much sodium lactate to add to a recipe, and it also allows you to calculate a recipe using dual lyes (both NaOH and KOH).

Each of these lye calculators is useful in its own way, but if you want to use a lye calculator to gain an insight into soap qualities, SoapCalc is preferred.

Use the Tools: SoapCalc

Luckily, there is no need to flail around in the dark about this. These questions have readily accessible answers. To find out these answers, your first stop should be to familiarize yourself with SoapCalc. SoapCalc is one of many online lye calculators. Here is the link:

SoapCalc can seem a little overwhelming at first, and some people prefer a simpler lye calculator, such as the one at the website or the MMS lye calculator at Majestic Mountain Sage. Many people prefer them; I prefer SoapCalc.

Looking at numbers 1, 2, and 3 in SoapCalc, notice that the default for 1 is NaOH, which is what you use to make bar soap. Click on the box with the 1 in it, and it will explain this. The number 2 allows you to choose your unit of measurement. If you are in the US, you will probably choose "ounces."

If you are just about anywhere else, you will probably choose "grams." If you click on the number 3 in the box, SoapCalc will explain why their default for "Water as a Percent of Oils" is set at 38%. Beginners will normally want to leave this set at 38%.

Notice that if you click on one of the oils in the "Oils, Fats and Waxes" list, SoapCalc gives you a column of numbers under "One." These numbers indicate the qualities you could expect in a soap made from this one oil alone. If you double-click on an oil, the calculator will put this oil into the "Recipe Oil List"—your recipe. If you double-click on more oils and add them to your "Recipe Oil List," the calculator will give you numbers that represent the soap qualities of this combination of oils in the "All" column.

Now put a few oils into the "Recipe Oil List" and look at the numbers in the "All" column. If you hover over Hardness, Cleansing, Condition, Bubbly, Creamy, Iodine, and INS, the calculator will tell you the recommended range of numbers for each of these qualities, and you can check your numbers for each quality to see how your (for now "pretend") recipe measures up.

The best way to get familiar with SoapCalc is to play with it. Use it to evaluate your current recipes, some online recipes or recipes from books, some recipes you have in contemplation, etc. One thing you'll notice is that there is a great deal of elasticity, as far as what you can and can't (or should and shouldn't) do when formulating a recipe. As one of my former employers put it, "De sky is de limit!" (Riiiight.)

While there is no substitute for experience—and lots of it—SoapCalc provides an evaluation of the qualities of just about any soap recipe you can dream up, and it provides a recommended numerical range that beginning soapmakers, especially, may want to heed. Or maybe not. You can learn a lot from "pushing the envelope."

Honey Patchouli Soap, Made with Soap #3 Recipe

Honey Patchouli Soap, Made with Soap #3 Recipe

What Qualities Do Experienced Soapmakers Prefer in Soap?

It is probably presumptuous of me to claim to know what "experienced soapmakers prefer." There are probably many who don't prefer what I prefer, and don't prefer what I think they prefer, so you may want to know where I'm getting these notions. They are drawn mostly from the comments and discussions among soapmakers in the many soapmaking groups, mostly on Facebook—though some are drawn from soapmaking forums.

The best way to find out the views of experienced soapmakers is to join several of the soapmaking groups on Facebook, where thousands of soapmakers offer their opinions about everthing soap-related, answer questions, and help troubleshoot problems. Members also offer lots of inspiring pictures!

I think we can assume that the "experienced soapmaker" prefers (and can make) a soap that has all the good qualities I mentioned earlier, but their preferences will be more fine-tuned. There seems to be a very strong tendency to shoot for very skin-conditioning, "moisturizing" recipes. In terms of SoapCalc numbers, this usually means a high Condition number, a low Cleansing number, and a moderately high superfat percentage.

Perhaps unsurprisingly, experienced soapmakers do not always agree with SoapCalc's guidelines. Some soapmakers make 100% olive oil soap (Castile), or 80% olive oil soap (Bastile) with a merry disregard for the way these formulas are WAY outside all but one of SoapCalc's recommended numerical ranges. Olive oil is nearly unique among unsaturated oils when it comes to producing a very hard and very fine bar of soap when properly cured. SoapCalc does not reflect that.


Unless you are making a Castile or Bastile soap, it is easy stay within SoapCalc's recommended Hardness range without compromising other soap qualities. At the lower end of this range—and even towards the middle of the range—you may want to add hardeners to your formula. Hardness can be increased by adding salt or sodium lactate.

Sodium lactate is preferable for this purpose because salt has an adverse effect on lather, and sodium lactate helps lather, at least a little. High amounts of salt will also bleach out many soap colors, and sodium lactate will not. Sodium lactate is very beneficial to skin, as well, and works almost twice as well as glycerin as a humectant.

I feel that sodium lactate is almost essential if your goal is to make a high conditioning soap with an acceptable hardness. You can use the MMS lye calculator to give you recommendations on the amount of sodium lactate to add to your specific recipe:


Most soapmakers prefer a very low Cleansing number. Almost all soapmakers insist on a number below 15. Some insist on a Cleansing number no higher than 12, and some insist on a Cleansing number somewhere between 0 and 12. I think a Cleansing number of 12 is satisfactory, but lower is in many ways better—if you can do this and still get the texture and other qualities you want.

"Pushing the envelope" on your Cleansing number also risks formulating a soap with poor lather, but there are additives that will compensate for this problem, too. The easiest approach is to just add sugar to your recipe, up to a tablespoon per pound of oils. Adding milk, honey, beer, or any other liquid containing sugars will also work. Substituting apple cider vinegar for all water helps, especially if you also add sugar. Sodium lactate is said to improve lather.


What does SoapCalc mean by "Condition"? Here is the page with their explanation of soap qualities: What it says about their Condition number is this: "Condition - Conditioning refers to the soap’s emollient content. A soap’s emollients are left on the skin. They help the skin retain moisture. They sooth the skin and keep it soft. A range of 44 to 69 is satisfactory for this soap quality."

Most soapmakers like their soap to have a Condition number at the high end of the recommended range. A high Condition number indicates a soap that is gentle to the skin. Most people (though not all) seem to prefer the feel of high-conditioning soaps, and many soapmakers were first drawn to making their own soap because of issues with dry, sensitive skin, or because they wanted to help the skin problems of their children, friends, or relatives.

As with other soap qualities, you can only push the Condition number so high without compromising other desirable qualities—most often hardness and lather. When your recipe gets into the higher range on its Condition number, you are likely to need to add hardeners like salt or sodium lactate, as well as additives that boost lather, like sugar, honey, beer, or milks of some kind.

These additives will only work up to a point, and how well they work can vary with each recipe, so the only way to learn how high you can push the Condition number without compromising other desirable qualities is through experimentation. Plus, of course, different people will have different preferences, and your preferences as a soapmaker will evolve.

It is always a good idea to set aside a bar—or at least an end piece—of each batch of soap you make, to see how it performs over time. This is especially true whenever you venture outside SoapCalc's recommended ranges. You can watch for DOS and notice changes in appearance like cracks and discoloration.

I think a Condition number of 58 is high enough—though I would like to push it to 60 or above where possible. I have a few bars of a batch of soap that I made over a year ago, made with 50% sunflower oils and a Condition number of 72 . People who were gifted with bars liked it very much. I didn't care much for its appearance (it has an unappealing translucency), but I like its performance. It was also a little on the soft side since I added no hardeners. Lather was good because of the addition of honey. Some bars got DOS after 6–9 months, and some bars still show no sign of DOS after more than a year.

My final verdict on this soap: This may be a very promising recipe that could be developed into a truly great soap with a few tweaks.

I guess the bottom line on the Condition number is that you must work out your preferences through experimentation.

Lather (Bubbly/Creamy)

Good lather is a must in hand-crafted soaps if you want people to like them. Most soapers rely primarily on coconut oil to provide bubbliness to lather, with the caveat that a soap with more than 20% coconut, unless with a very high superfat, will be too cleansing for most people's tastes, and can feel harsh. Palm and tallow provide creaminess. But again, if you load your soap up with oils that produce abundant lather, other soap qualities will likely suffer.

I think the best approach to getting good lather is to make a high-conditioning, low-cleansing soap and don't fret too much if lather is at the low end of SoapCalc's recommended range on Bubbly/Creamy. Just add sugar, honey, beer, or milk for lather. These do a great job! Sugar is excellent for boosting lather, and if you have tried adding one talespoon of sugar per pound of oil to your recipe and you still think the lather is lackluster, you can always add more. Try adding 2 tablespoons per pound of oil.

The lather of most soaps improves over time. My experimental soap with 50% sunflower oil and a Condition number of 72 has a Bubbly number of only 6, but the lather is, if not lush, pretty good, because of the addition of honey.

Lather is another area where tastes and opinions vary. Some people will not be satisfied with lather until it explodes all over the tub. Others just want enough lather to feel assured the bar they are using is really soap.

Some other things that help at least marginally with lather are subbing ACV for all water and adding sodium lactate.

Salt added to soap for hardness will decrease lather. This is why salt soaps are made with a very high percentage of coconut oil—the only oil that will make a soap that lathers in the presence of high amounts of salt. Sodium lactate will harden soap without diminishing lather, and in fact, is said to boost it.

Iodine and INS

I am not even going to try to explain what these numbers really mean.

Frankly, they remain largely a mystery to me. I have made lovely soaps that were seriously outside the recommended limits on both Iodine and INS. I have also made soaps outside these limits that were too soft. My general impression is that you can risk ignoring these numbers if your soap's Hardness number is high enough. Be aware that sometimes it works and sometimes it doesn't.

Again, using my 50% sunflower oil soap with a Condition number of 72 as an example, Iodine is 98 and INS is 97—wildly outside recommended ranges. (It was an experiment, okay?) It is in many ways a pretty good soap. As with all else soapy, experience and experimentation is your friend. Many of these "not quite right" recipes can be the springboard to developing the Perfect Recipe.

Lavender Soap

Lavender Soap

Fatty Acid Profiles in Soap

If you look further down the "Soap Qualities" column, you will see that SoapCalc also gives numbers for each of eight fatty acids. These numbers are the percentage of these fatty acids in single oils (in column one) and the combination of oils in your recipe (column two). These numbers are very meaningful in terms of the properties of your finished soap. If you are a beginning soap-maker, you will want to learn as much as you can about the properties of the various fatty acids.

Here is one link that explains this, along with some of the special qualities of some of the fats, oils, waxes, and butters you might use for soap-making:

The more experienced you become in making soap, the more breathless your interest in the fatty acid profiles of different formulations of soap.

One of the reasons that each soapmaker's Perfect Recipe is unique is because preferences as to fatty acid profiles of soap are variable. People with dry and sensitive skin can have a strong dislike for high percentages lauric and myrsitic acids in soap, and some don't care much for a high percentage of palmitic acid.

Recipe nerds like myself have a keen interest in the fatty acid balance of a recipe and will tend to prefer soaps that are lower in lauric, myrsitic, and palmitic acids, and higher in oleic. They often like linoleic and linolenic acid percentages to be as high as possible without excessive risk of DOS (dreaded orange spots caused by the superfat oils in soaps becoming rancid).

I don't have a clear opinion on the ideal percentage of stearic acid in soap, due to lack of experience and attention to this one, but I'm starting to notice that something like 10–12% is very nice.

This link on The Most Popular Fatty Acid Profiles in Soapmaking may help provide some clarity:


Superfat in soap is the percentage of unsaponified oils that are left in the soap after saponification is complete. Since soap is created through a chemical reaction between lye (a base) and fatty acids (weak acids in fats and oils), you may remember from Chemistry 101 that X amount of a base will only "use up" X amount of an acid. Because electrons. Once the lye in your recipe has reacted with the fatty acids in your recipe, it's just . . . gone. It's not there anymore. Any oils that are still around after the lye is gone are called superfat.

If you set your superfat to 0% in SoapCalc, it will give you a lye amount that (theoretically) will use up all the fatty acids in your recipe, so that there is are no oils still around after saponification is complete.

This is not desirable. This is because the SAP values of oils used in lye calculators are averages. The real SAP values of the oils you're are using are unknown. (Creepy, right?) These variations in SAP values are caused mainly by growing conditions of the animal or vegetable fats the oils come from.

Maybe the real SAP values of your oils are higher, or maybe they are lower than the averages used by lye calculators. If you happen to be using fats and oils that have a lower SAP value than the number used by your lye calculator, there will be leftover lye in your soap. This is not good. A lye-heavy soap will be harsh and can irritate or even burn skin.

This is why lye calculators have a default superfat setting of 5%—meaning the lye calculator will give you a lye amount for your recipe that will (theoretically) leave 5% of the fatty acids in your soap unsaponified. On the other hand, if the SAP values in your fats/oils chances to be on the low side, a 5% superfat ensures that all the lye in the recipe will be used up, by throwing in a little extra fat just in case.

While soaps made for special purposes, such as laundry soap, are usually made with a 0% superfat, body soaps should always be made with at least a 5% superfat. Body soaps made with very high amounts of coconut oil, on the other hand, are normally made with at least a 20% superfat. (Some people go higher than 20% for these soaps.)

Okay, so what's NORMAL in the way of superfat? Again, conjuring the spirits of "experienced soapmakers," the preference seems to be for 7%–8% superfat. I use 8%. Some people in the soapmakers' groups on Facebook speak of using 10% superfat in their body soaps. I have never tried going up to 10% superfat, so I can't comment on this.

Once again, experimentation is your friend. Much depends on personal preference and probably also on the way The Recipe is formulated. Much also depends on whether you have hard or soft water.

Elderflower scented soap

Elderflower scented soap

Sat : Unsat Ratio

You will see the Sat : Unsat Ratio near the bottom of the SoapCalc's lye calculator page, right under the fatty acids column. On the View/Print Recipe page, it is shown at the very top right of the page. This is the ratio of saturated fats to unsaturated fats in the recipe. Looking at it another way, it is the ratio of hard oils to soft oils. The most commonly recommended Sat : Unsat ratio is 60:40—that is, 60% hard oils to 40% soft oils.

Many soapers prefer a 40:60 Sat : Unsat ratio. This is because the soft oils are the more conditioning oils, richer in what I would call the "nutrient" oils: oleic, ricinoleic, linoleic, and linolenic. In my view, anything in between the 40:60 and 60:40 is good, but if you want a soap with a high Condition number, you will almost certainly wind up with something more like a 40:60 ratio. The lower the percentage of saturated fats, the more likely you will need to add sodium lactate to your recipe for hardness.

Soap #1 has a 36:64 ratio, which made its hardness marginal.
Soap #2 has a 38:62 ratio. It is, in my opinion, a fine recipe with the addition of sodium lactate for hardness.
Soap #3 is right at 40:60 (though this is cut off in the screenshot). With the addition of sodium lactate, it is darned near perfect.
Soap #4 is also right at 40:60 and, in my opinion—with the addition of sodium lactate—is the best of all.

Here again, no one can tell you what to do on this ratio, as it will depend on personal preferences.

You may notice that health-food-store "real" soaps are quite hard. My impression is that soapmakers who sell a large volume of soaps wholesale feel the need to produce a very hard soap—probably harder than 60:40—because their soaps will need to stand up to shipment and handling, including some customer abuse at the retail store. Soaps for mass marketing will not sell well if they quickly start to look shopworn from handling. Protective packaging could help, but that increases overhead costs.

On the other hand, if you are not mass marketing and sell mainly online or at craft fairs and farmers markets, or mainly make soaps for gifts, friends and family, and personal use, you are in a position to focus entirely on your personal ideas of a quality soap. Even if some of your bars get a little roughed up at the craft fair, you can tidy them up again. You don't have to compromise any soap quality at all because of the concern that your product will get banged up from careless handling.

The Evolution of My "Perfect" Recipe

Now, in case you are interested, I will show you how my personal Perfect Recipe evolved. At the end of this journey, I will even reveal The Recipe! I am a crazy old woman with no expectation of ever having a real income from soapmaking. I sell enough to support my addiction, and maybe a tiny bit more, and I am content with that.

None of my daughters are clamoring to take over the family business (since it doesn't make any money), and I have no expectation of getting the Madame Curie award for my contribution to the science/art of soapmaking. So I see no reason not to share, and if you would like to use my recipes to build a soaping empire, you may feel free to do so.

More likely, though, you may be able to use this illustration of the soapmaking evolutionary process to understand where you want to go with your own recipes and get some ideas about how to get there.

All the soap recipes shown here are good recipes—except the first one. The first one is pretty marginal, but it was the basis for all the subsequent really good soaps. Each variation on the orginal not-so-good recipe produced (in my opinion) a better soap. You actually might not agree, assuming you wanted to test each one. You might prefer Soap #2 or Soap #3. The differences are not huge.

While I have never known anyone to actually make any recipe I have offered them, in case you are interested in making Soaps #2-#4, these fit well in Brambleberry's 10" silicone mold, which you can see here:—P5199.aspx.

Soap #1 Recipe, SoapCalc Screenshot

Soap #1 Recipe, SoapCalc Screenshot

Jasmine Soap, Made with Soap #1 Recipe

Jasmine Soap, Made with Soap #1 Recipe

Soap #1

Here is the marginal recipe that was the springboard that led to all the others.

Notes: One ounce of sodium lactate was added to this recipe. I add sodium lactate to the slightly cooled lye water. If you look at the Iodine and INS numbers for this recipe, you will see that without sodium lactate this soap would be too soft. INS is too low and Iodine is too high.

With the addition of sodium lactate, though, it works and is hard enough. One problem I encountered is that it would crumble when cut, or sometimes crack after cutting, unless cut with a fishing line. (Sodium lactate can cause this.) Superfat is 8%.

One tablespoon of sugar was added to this recipe, to help lather. (You'll notice that lather numbers are a little marginal.)

I also subbed ACV (apple cider vinegar) for all water in this and all subsequent recipes. ACV is beneficial for skin. It makes a nice mild bar, does not discolor at all, and is said to help lather.

So you may wonder why I formulated this clearly marginal soap. I was shooting for a high Condition number because I was on a quest for a high-conditioning soap for my delicate-skinned young-uns.

Now, for your Cleansing number, SoapCalc gives 12 as the very lowest acceptable number for this. The truth is, almost all soapers seem to prefer a cleansing number that is 12 or lower. Notice that Cleansing in this recipe is 14—in my opinion, too high.

Evaluation: This bar was okay on hardness and had a nice moisturizing feel. Lather was adequate, due to the added sugar and ACV. In terms of appearance, it had a translucency that was unattractive—a bit of a "glassy" look.

Don't get me wrong. It's not a bad soap. It just isn't all that good compared to the ones that follow.

Soap #2 Recipe, SoapCalc Screenshot

Soap #2 Recipe, SoapCalc Screenshot

Soap #2

Notes: Again, one ounce of sodium lactate was added to this recipe, ACV was subbed for all water, and 1 tablespoon of sugar was added for lather. Superfat is 8%.

Notice that the only difference between this recipe and the previous one (except that I absent-mindedly dropped water from 38% to 33%—for no reason whatsoever) is that cocoa butter was added.

When I experienced the sheer creaminess of the raw soap, I knew I was onto something. The addition of cocoa butter changed the whole character of both the raw soap and the finished soap.

Evaluation: This recipe is wonderful—well worth making. Texture, feel, and conditioning were lovely. The ugly translucency was replaced with a creamy look and a softer and smoother feel. I was still cutting with fishing line, because it works better and I was afraid not to when using sodium lactate, by this time.

I made this recipe several times and was blown away each time. Unfortunately, the pictures I took of these batches have been lost. If I still had them, you'd see what I mean. This soap looks like Soap #3, though. You might even like this recipe better than subsequent variations.

Notice that Cleansing has dropped from 14 to 13, and Condition has dropped from 61 to 60. This slight drop in the Condition number was well worth it.

Dragon's Blood Soap

Dragon's Blood Soap

Soap Recipe #3, SoapCalc Screenshot

Soap Recipe #3, SoapCalc Screenshot

Soap #3

Notes: Again, one ounce of sodium lactate was added to this recipe, ACV was subbed for all water, and 2 tablespoons of sugar was added for lather. Superfat is 8%.

There are several changes. The reason for two of them is that I ran out of RBO (rice bran oil) and decided to try substituting lard. With the substitution of lard, I did not like some of the numbers, so I added sunflower oil. Specifically, I did not like the linoleic/linolenic numbers and the Condition number.

Adding Sunflower oil helped, but not enough, so I decided to add a small amount of flaxseed oil. Also, this was partly because I had a great interest in trying flaxseed oil in soap, because it is so beneficial to skin. I have it on good authority that flaxseed oil should not be added to soap in an amount greater than 2%, or you'll have DOS problems.

For this recipe, Cleansing has dropped to 12, while Condition has dropped to 58. But in my opinion Soap #3 is better than Soap #2. I think the lard gave it a better feel and the flaxseed oil compensated for the small loss in conditioning. Plus conditioning is still high.

Note: Linoleic and linolenic acids saponify more slowly than other fatty acids, so in all likelihood the final superfat in this soap is largely linoleic and linolenic acids. These are the most skin-friendly of the fatty acids, so this is good.

I used this recipe for about a year and was very happy with it. You will be too, but I would suggest increasing the sugar from 2 tablespoons to 3–4 tablespoons.

Soap #4

Notes: This time, 1.1 ounces of sodium lactate was added to this recipe (to compensate for the slight increase in the size of the recipe), ACV was subbed for all water, and 3–4 tablespoons of sugar were added for lather. (The actual amount of sugar was two Chinese soup spoons.) Superfat is 8%.

Soap #4 Recipe, SoapCalc Screenshot

Soap #4 Recipe, SoapCalc Screenshot

Ylang-Ylang Soap, Made with Recipe #4.

Ylang-Ylang Soap, Made with Recipe #4.

Mango-Coconut Soap, Recipe#4

Mango-Coconut Soap, Recipe#4

In this variation, the main difference between Soap #3 and Soap #4 is that beef tallow was substituted for palm oil. Sunflower oil was increased from 3 ounces to 4 ounces to compensate for lower conditioning caused by this substitution. Condition, as in Soap #3 is still 58 and Cleansing 12.

Meanwhile, I had accidentally discovered that more sugar would greatly improve lather, so the sugar amount was increased to 3 or 4 tablespoons.

Also, I finally got it together and changed the water amount in the recipe to 38%. A higher water amount is helpful if you would like to do beautiful swirls in your soap and to help counteract the effect of a fragrance that accelerates. As you can see from the photo, sometimes this is not enough. This soap was scented with Ylang-Ylang, and it accelerated on me, so the swirls lack finesse.

But boy is this a great soap! (I will work out the swirl problem.) The texture is divine. The feel is lovely. The lather is to die for. (The high amount of stearic acid in tallow helps creaminess and stability in lather.)

The substitution of beef tallow for palm oil gave this bar "heft" and substantiality.

In my opinion (which may not necessarily be yours), this last recipe is the best.

Additional Notes

Some experienced soapers may want to quibble about these recipes. Iodine is okay, after that first one, but INS remains low. The way I feel is, that's what the sodium lactate is for. Results are excellent anyway.

Another criticism that you may want to take a little more seriously is that the linoleic/linolenic percentage is higher than many soapers would risk. When the total linoleic/linolenic percentage is over 15 (and some would put this number lower), you risk DOS.

Now, I won't tell you I've never seen DOS, but I think I have some established methods for keeping my soaps DOS-free for an extended period of time. (By an extended period of time, I mean a year—though I can't swear to this, since I have few soaps around that are a year old.)

One good point is that the cocoa butter content in these recipes helps to discourage DOS.

Another suspected cause of DOS is the overheating of oils or allowing them to heat too long. Heating unsaturated oils hastens their breakdown into rancidity.

When you are working with a recipe that has a high amount of unsaturated oils and/or a high linoleic/linolenic percentage, there are some precautions you can take. When you weigh out your oils, weigh out the hard oils first and put them in the pot to melt. Then weigh out your soft oils and set them aside in a separate container and do not heat them.

In these recipes, you would weigh out the canola, sunflower, and flaxseed oil and set them aside while the other oils are melting. After the hard oils have melted and cooled a bit, mix in the soft oils. That way you will not expose the more delicate oils to heat. Also, review other likely causes of DOS and be sure to avoid them. Here is a good discussion of DOS and what causes it:

Both the canola and sunflower oil used in these recipes are from Wal-Mart. I do not use high-oleic canola or sunflower. Some would recommend switching to these, and I wouldn't blame you if you were uneasy with Wal-Mart's offerings of these problematic oils. You can buy high-oleic oils at most health-food stores.

With all oils that you purchase, look at the expiration dates. On Wal-Mart's canola and sunflower oils, the expiration date is printed directly onto the plastic in teeny-tiny letters in the general area of the shoulder of the bottle. In my part of the country, these expiration dates are always more than a year out—perhaps explaining why I have little trouble with DOS.

I also keep canola, sunflower, and flaxseed oil—and any other highly unsaturated oils I may be using—refrigerated after opening. It would also be best to plan on using up these oils long before their expiration dates.

If you live in an unusually hot, humid climate, you may want to go the high-oleic route with these recipes to avoid a disappointing surprise. If you substitute high-oleic oils, be sure to run the whole recipe through SoapCalc, since the change in the fatty acid profile will likely mean a change in the lye amount.

Regarding subbing ACV for all water, this is just an idiosyncrasy of mine. You may want to use water instead. If so, it might be a good idea to use distilled water, since minerals in tap water can cause DOS.

Finally, many soapers would not want to screw around with this many ingredients. And of course, I am not saying anyone should run out and buy ten oils and butters. Many people are more strongly focused on other aspects of soapmaking—and there are many other aspects of soapmaking to focus on.

There are artistic soapmakers, natural-ingredients soapmakers, goat-milk soapmakers, soapmakers who need a good hard recipe that will release from an intricate mold, and soapmakers who would prefer a more time-efficient formula that will allow soap sales to give them a reasonable return for their labor.

I myself am a recipe nerd. But even if you are not a recipe nerd, I would like to think that some beginning soapmakers might enjoy—and profit from—this illustration of the process of formulating that Perfect Recipe.

Orange-Spice Soap made with the Sun-Can Swap Recipe

Orange-Spice Soap made with the Sun-Can Swap Recipe

Tweaks to "the Recipe"

"The Recipe" is a thing that is continually evolving, often by accident. Since I initially wrote this article, I've tried two variations of the final final final outcome, and I like both of them very much.

The first variation came about when I got the Sunflower Oil bottle mixed up with the Canola Oil bottle and used 9 ounce of Sunflower and 4 ounce of Canola, instead of vice-versa. Lo and behold, this soap had not only a more luscious "feel" to it, but a somewhat better lather.

I call this the "Sun-Can Swap Recipe," which is shown below.

You can see that nothing else has changed in this recipe from the immediately previous one. One effect of swapping these two oils is that the combined linloleic/linolenic percentage is even higher than before, but with the precautions I've already described, DOS should not present a problem.

As with previous recipes, ACV is subbed for all water and about four tablespoons of sugar is dissolved in the ACV before the lye is added to it, and then one ounce of sodium lactate is dissolved in the lye water.

The "Sun-Can Swap Recipe"--the result of accidentally getting the bottles of oil mixed up.

The "Sun-Can Swap Recipe"--the result of accidentally getting the bottles of oil mixed up.

A soap made using the Avocado Oil Recipe, scented with Queen of the Nile from Nature's Garden

A soap made using the Avocado Oil Recipe, scented with Queen of the Nile from Nature's Garden

The next (and final, to date) tweak to this recipe was to substitute Avocado Oil for the Lard. The reason I decided to do this was because I had a large bottle of Avocado Oil I needed to use before its expiration date.

This tweak required a little more extensive re-working of the recipe, since substituting Avocado Oil for Lard would have made the soap too soft. To make the hardness number acceptable, I increased the Beef Tallow to 9 ounces, slightly reduced the amount of Sunflower and Canola, and replaced the 8 ounces of Lard with 5 ounces of Avocado Oil. I also increased the Castor Oil to 3 ounces, to improve lather. (This juggling was necessary partly because I wanted to end up with the same quantity of soap, so the batch size would fit in my mold.)

I was even more pleased with this recipe than any of the previous ones—mainly because of the improvement in lather, which was probably because of a higher percentage of Stearic Acid provided by the Beef Tallow, and possibly also from the small increase in the Castor Oil. The linoleic/linolenic percentage is a bit lower, but still very high.

As with previous recipes, ACV is subbed for all water and about four tablespoons of sugar is dissolved in the ACV before the lye is added to it, and then one ounce of sodium lactate is dissolved in the lye water.

This new recipe is shown below. I think it's the final winner!

Avocado Oil subbed for Lard Recipe, with adjustments

Avocado Oil subbed for Lard Recipe, with adjustments

Questions & Answers

Question: For how long do you cure your soaps?

Answer: This recipe seems to need a six-week cure. I think this is mainly because of the fairly high water content, which is needed for nice swirls.

Question: I'm making hand milked, farm fresh, goat milk soap! Is it ok to use your sun-can recip