If you understand what SAP stands for and why it is needed to calculate the right amount of lye, you will understand why it shall be used for calculation of the superfat. It is, indeed, it is the total lye required to saponify all the oils, including superfat I just added the definition for clarity also to the E formula. If that is the case, then wouldn’t it be much easier to look for the amount of oils that would make 10% of your total recipe, and then use enough lye to fully saponify the other 90% of oils to a 0% SF? For example, coconut oil soap will likely need superfat. I read it 3 times and still don’t understand it. The problem is – and I think I have to state it maybe in the beginning of the post – that superfat means % of unsaponified fatty acids, not the % of unsaponified oil weight. Olive 3.08 oz, Lye 3.44 oz Just to clarify, being a noob and all, “basic recipe” = oils – the superfatting oils? Once the calculations are completed, do we use the “B” or the “E” amount of lye when executing the recipe? When I am making hot process soap, and I’d like more than one color, I do it after the soap is cooked. I always superfat my hot process soaps with 1 tbsp of oil or butter per pound of oils. Too drying? Is there a recipe I can use or, Home | What's New! Your basic recipe says 87g of lye needed at 0% superfat. The pros of coconut oil and superfatting combine to cancel out the cons of using a high amount of coconut and using a high superfat percentage, resulting in a really lovely bar of soap. In this post I show the other problem – How to calculate the amount of oil in order to get the desired % of the hot process superfat. This is the amount of Lye necessary to Saponify just your superfating oil. Olive oil kills lather, so the more you use, the less bubbly your bar of soap will be. It is also true in HP if you would just mix your oils and then took 5% out and added it after the saponification is complete. Also, it seems you are czech, you might be interested in my slovak blog moderna.alchymistka.eu. It takes only 3 ingredients and has an amazing lather. So the recipe would be: 138g palm oil, 138g coconut oil, 317g olive oil and 65g shea butter. If you've found this site to be helpful in expanding your soap making knowledge and would like to make a SMALL donation to help with the cost of maintaining this site, your support would be greatly appreciated. But what if I do want to calculate it vice-versa? Because the oils are mixed and we calculate SAP for the mixture of oils. I bought some shea butter soap and fell in love so I decided I would just make my own. A math wiz I am not, but I suspected that I might be on the right track. However, people still wish to add oils and say – these are those that make the superfat – these did not saponify. Without your superfating oils it should read 100%. Enter total oil weight, in my case 36oz. I am not sure when are you adding the shea butter and avocado oil, but normally, if you HP your basic recipe with 0% lye discount (which is what you should do when superfatting), of course, it can zap before you add your superfatting oils, since there are small differences in superfat. D = (3.42-3.078)/0.128 = 2.67 oz. Coconut 16.50 oz If we want a 10% superfat, we are adding oils representing 10% of the lye needed to saponify all the oils (basic recipe + superfat oils). . … Hi Evik – I have found your information to be very helpful to me. Have been doind CP soap until now and want to make HP ať last and still I didnt know how to calculate – and I know found this! When you cook soap in hot-process soapmaking, there will be water evaporation—a small and undiscernible stream of steam from the air vent in your slow cooker’s lid. The most important things to remember about hot process soap making are to stick blend all the way to medium trace, then allow the soap to cook, stirring occasionally until the soap becomes consistently soft and fluid-like mashed potatoes. So we can conclude that scenario 2 makes sense for superfatting hot processed soaps only, after the saponification was completed and only if we want to control the oils which will create our superfat. Experiment with a 100% coconut oil soap with a 20% superfat. However, soap may be superfatted regardless of whether or not there is coconut oil in the formulation. I tried to make the text more clear, so I rewrote it. And this means you can only superfat this way in at the end of HP. Thanks for the reply, Evik. Therefore we need the quantity of oils that would be saponified by 96.7g–87g = 9.67g (or 3.42-3.078 = 0.342 oz) of lye (10% of the whole lye amount). But I have to pose a question. I hope I did not loose you here. I will use a basic recipe from a post on talksoapforum, where this question was asked by Heavensgrace. The quantity of oil to get the 10% superfat would be 0.128 SAP * x = 9.67 oz => 75.5 g 87/0.9 = 96.7g (or 3.078/0.9=3.42 oz) – This is the amount of lye needed to saponify 100% of oils. Enter the weight of the superfating oil into the appropriate space and press calculate at 0% superfating rate. yes, sorry, I did not define it clearly, you are right! I bought everything that I need to start this but I do not for the life of me understand the calculations. Now we don’t really care about this in one-oil recipes, nor in the cold process recipes with mixed oils. Learn how your comment data is processed. Hi Tara, if you keep the 65g of shea butter while increasing its superfat %, you need to decrease the % of the oils in the base recipe. Now enter all your oil percentages into appropriate spots without the superfating oil. Turn the oil on high, cover and allow the oils to melt, about 15 minutes, depending on … I made a batch based on your calculations but after an hour of cooking I get a zap. The resulting page will show the oil weights including your superfating oil weight. It seems that I could saponify the base recipe with this amount of lye, then add my 65g shea butter to get my 10% superfat of shea? The SAP value of Cocoa Butter is .126 SF 10% Shea Butter 1.48 oz; Avocado 1.43 oz, Hi Jacqueline, sorry for my late reply. I’ve made a few batches of hp soap using the soap calc. works for more oils, of course, the very same way. O1 – amount of one oil to get 10% superfat Fiction -- Fat added after the cook will remain as superfat in HP (hot process) soap. I have also added a bit of honey after the cook. But… It’s too complicazed for mě also because ounces are so hard to jmagine ;)) That is the whole point why I posted about it. Now you have to make room for 5% superfating oil (if you are superfating to 5%) Enter 5% oil or fat of your choice and click your mouse to update page data. Great post/article. If you would like to use a fragrance, please follow the suggested recommendation from your supplier. Write down the Lye weight in oz, and the weight of the superfating oil (almond oil in my case). O2 – amount of second oil to get 10% superfat, If 50:50, then 0.5*O1 + 0.5*O2 In any case, I believe you will understand once you realize that superfat is not calculated based on “grams of oils”, but based on saponification values of oils. When we make cold process soap, it’s a mathematical formula that looks like this: (oil amount) x (SAP value) = lye amount needed. Hot Process Soap. Press Start over, select %, not oz and enter the total oil and fats weight that you copied from your printed sheet. Follow any responses to this post through RSS 2.0.You can leave a response or trackback from your own site. Hey, I am happy I found this post. Print this page. Since saponification continues while in the soap mould, adding it last may only ensure that most of your superfat is the oil you added last. This soap recipe, however, breaks both of those rules by using 100 percent coconut oil while increasing the superfat percentage to 20 percent. Water amount in hot process soap making. According to the equation from last post, if I added my shea at the end with these calculated lye amounts (per SoapCalc), my superfat would only be 8.7%: Instead of solving for superfat, can I use 0.1 for the superfat, and calculate the amount of lye needed to saponify the base recipe like this: Solving for x would equal 85.6 g of lye. And if you're willing to forego some rules, it can be among the foremost versatile, too. I’m sorry, but I came here from a post on the hot process facebook page. Enter percentages of all fats and oils used in recipe including superfating oil, which is 5% as I want to superfat to 5% (if you want to superfat to 7%, enter 7%). OMG, I totally don’t get it. The superfat ratio may be different depending on the type of fat you use. If you wish to superfat with a particular oil, you need to think about how much of fatty acids it contains in a gram. Soap making is a science at heart. A – is the amount of lye needed to saponify all the oils in the recipe (including those added after the soap is finished), at 0% lye discount, B – is the lye needed to saponify only the oils in the basic recipe (without superfat oils). yes, your assumption is correct! If you add a certain amount of hemp oil at the end of the HP, this will not saponify and you can say “this soap is superfatted with hemp oil”. All content on this website is for informational purposes only. In Hot Process (HP), the lye is finished working, as a result of using heat to accelerate the reaction, when the soap is put in the mold. Am making 1Lb of soap now as a test batch. After you cook (saponify) your batch, add your superfating oil (the weight of which you wrote down). Using your example from above, let’s say I want to my superfat to be 10% and it all to be shea butter. For instance – 100g of coconut oil contains more fatty acids than 100g of olive oil. I always add sodium lactate to my hot process soap, at a rate of 3% of my oils weight, to help keep the soap more fluid for pouring. Unfortunately, there is no equality between % of oil in the recipe and % of superfat. Thank you soooo much… but boy confusing with oz. My question is: if I want my superfat oils to be a percentage of total oils, can I use the equation from your last post to calculate lye amount? All I want to do is add my super fat after I cook my soap. Weigh tallow, coconut oil, and olive oil, and put into a crockpot on high, or a pot on the stove … There if you discount 5%, you discount 5% of one oil, or of a mixture of oils, where fatty acids are already mixed well and so 5% of the unsaponified fraction has the same amount of fatty acids as each of the nineteen 5% portions of saponified fraction. Glycerin is a major ingredient in many of the Bramble Berry Lotion Bases. For example, if you have a soap made up or three oils; olive, palm and coconut, then project 5% super fat from the lye calculation at start, you will end up with a combination of all three oils in your 5% super fat. Hope this makes sense. Recipe: Follow the directions from The Ultimate Guide to Hot Process Soap. Arggggghhh. Hi Christina, thank you for your comment. I read and re-read your article, but I never saw where you defined what “E” represents. If you are a new soaper, or just want a better understanding of superfat and water amounts, and how to use the SAP chart to create recipes this video will explain it for you. Castor 2.42 oz You might want to read it first, as I explain there why in hot process (HP) and only in hot process, the calculation of the superfat should be based on the saponification values and not on the percentage of oils. Coconut oil soap is probably the simplest recipe you'll ever make for soap. Rating: Superfatting Before or After Trace by: Russ Super fatting at trace gives you more control over which fats are in the superfat. I’m HORRIBLE at math, and the above post is HORRIBLY confusing for me. Would it be correct to divide both amounts in half (50% plus 50%, or 2.7 oz of Cocoa butter plus 2.9 oz of Shea butter) to achieve the proper amounts of each to add to arrive at the 10% superfat figure? Thank you for your work and contribution. Question is: How much of shea butter and castor oil we need to add in order to obtain 10% superfat? The formula at the end is universal – doesn’t matter if you use ounces or grams or kilograms, as soon as all your measures are the same. I calculated 0 % for super fat,how much Shea do I put in after I cook? Palm Oil: Hard: Mild stabilizing lather, hard, long lasting bar: 25-50% So basically, in cold process, it is exactly as you say. SIGN UP for my newsletter, and receive for FREE my 25 page E-book, Making creams with all natural emulsifier Olivem 1000, Making 100% olive oil soap – tips, tricks and why it should be avoided by beginners, http://curious-soapmaker.com/superfat-vs-lye-discount.html, Find Soap Making Supplies at NaturesGardenCandles.com. What you did is to get 10% superfat, but 8.7% of it is shea butter (cause that is the 65g that did not change) and 1.3% of superfat is mix of the oils from the base recipe that are unsaponified. 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