But the migration of insoluble soaps into the crystals and the transfer of more-soluble soaps into the liquid phase is not a fast process. … from North Country Soap Making Library. You will want to keep a close eye on it to ensure it does not over heat. In my experience, however, soap made with a more balanced blend of fats should perform decently well after a 4-8 week cure, with a more gradual improvement after that time. If the cure was only about water evaporation, we should see little or no change in these soap qualities. But neither of these soaps will be at their best if used so young -- they will not lather as much, be as physically hard, or last as long as they will after a full cure. It lathered very poorly at 2 weeks and only a little bit better at 5-6 weeks. The effect was kind of cool, but it ruined the soap. Once that starts to happen, I turn my oven off and let to soap sit in the oven until the gel reaches the edges. https://www.rachaelraymag.com/recipe/how-to-dry-citrus-in-the-oven Anyone who has eagerly bathed with a freshly cut bar of soap and gotten some skin irritation has learned that lesson. Stearic and palmitic soaps salt-out quickly and well so they become concentrated in the solid soap crystals. Layering paper towels. The trick to this process is using an oven safe mold, and really getting to know your oven. Handcrafted soap may be SAFE to use shortly after it is made, but it will not be at its BEST until some weeks or even months go by. During the cure time water dissolves from your soap creating a harder and longer-lasting bar in your shower. The obvious and main pro is that unlike traditional cold process soap, it does not require a 6 week cure time. This cold process soap recipe is the best ever. For the purpose of this discussion, I want to share that lauric and myristic acids are the smallest fatty acids, and the soap they make is highly soluble in water. Fatty acids with a simple straight shape are lauric, myristic, palmitic, and stearic. The soap is called CPOP and may have less water and less curing time, but curing time will vary based on the recipe and other factors too. (This applies to hot process soap too.) First things first. After the soap is poured into your mold, place it in the oven. Even if your recipe is designed to make a long lasting, mild, lathery bar, you will see the best of these qualities if you give your soap enough time to fully cure. Place your soaps on the shelf. Additives There’s also a process called ‘Oven-processing’ where you cook your cold process soap in the oven at a relatively low heat for up to an hour. You can always buy it in our Etsy shop! Curing Your Handcrafted Soap. I love the process of making soap, but what I love even more is developing recipes for it. I let mine sit for 5-10 minutes and watch closely for the gel stage. It will usually take 3 or 4 weeks for soap to cure. https://www.rachaelraymag.com/recipe/how-to-dry-citrus-in-the-oven High oleic soaps (olive oil soap for example) also need a longer cure time for best performance. Keep good written notes as you go -- do not count on your memory to be accurate. There are a few reasons why this step is necessary. HPOP: Hot Process Oven Process. But, because we force the soap through a gel phase, you no longer have to wait for it to cure. Zeolites. Remove the oven rack from the preheating oven, or use an oven-safe wire rack. Let's get iNaturalBody! the internal temperature of the soap with a thermometer and turn the oven off when the soap temp reaches between 180-190 degrees. Use this paste to cover the stains. At the end of this time, see what your test results show. The oven’s heat will evaporate more liquid out of the soap. This bulky shape prevents oleic soap molecules from fitting nicely into the structure of a soap crystal, so the liquid phase in a bar of contains many more oleic soap molecules than what you might think from looking at the soap recipe. This post may contain affiliate links, to learn more about them, check out our Disclosure. Copyright © 2002-2020 - All rights reserved by Classic Bells Ltd. of curing soap is developing soap's crystalline structure. Lay out the slices on the rack so that they have at least 5 cm (2.0 in) of space on all sides. Palmitic acid is medium length and the soap it makes is moderately soluble in water. There are two main ways to make soap, cold process and hot process. Water is necessary to make soap but the extra water in the soap is not needed. Put the lid on your dutch When a batch of soap is made from fat, the soap molecules within the soap will vary in size and shape, depending on the different fatty acids present. Step Eleven: Perform a Ph test for safety. What are the individual soap molecules like? How does this salting-out affect the structure of the soap? As more soap molecules accumulate on your skin or washcloth, they will build a larger amount of lather. When you are finished creating your cold process soap and have it safely in the mold, you can put it in a warm oven to force the gel stage. Wash the skillet thoroughly with warm water and a touch of dish soap. Cold Process Oven Process (CPOP) is one of the best ways to force your soap to gel. TEN: Pull the soap out of the oven. I tried it at the end of the cure time once and my soap cracked all over the surface, kind of like crazing on old china. from North Country Soap Making Library. Gel phase is beneficial to soap because it can intensify colors in the soap. Since HP soap is usually made with more water than CP soap, the drying time for HP soaps actually takes more time, not less, before the soap stabilizes at a reasonably constant weight. If you were to step into your shower with a brand new bar of soap it would dissolve pretty quickly. But there is a method called hot-process soap making that speeds up the time it takes the soap to cure. After twenty minutes, take mixture out of the oven and stir with wire whisk. But is the cure truly done at this point? Some soap makers allow for this by curing CP soap a minimum of 4 weeks and HP soap a minimum of 6 weeks. The cure time is all about water evaporation. After one hour, turn off the oven and leave the pan in the oven to cool completely. And that, in not a nutshell, is why curing soap is a complex process that goes beyond water evaporation. I discarded my oven rack for curing and now I use the rack in the closet for curing soaps (a wire rack: perfect). You will want to keep a close eye on it to ensure it does not over heat. Layers of paper towels in between soaps only make the moisture problem worse. Since HP soap is usually made with more water than CP soap, the drying time for HP soaps actually takes more time, not less, before the soap stabilizes at a reasonably constant weight. There is a similar liquid inside the crystals as well, but for the purpose of this discussion, the liquid in the crystals is not as important as the liquid surrounding the crystals. After soap is in the mold, the process of saponification can cause the soap to heat up. Liquid soap doesn't have a solid crystalline structure, and it doesn't need to dry. Putting your soap in the oven, even at a low temperature, will just cause melting and gooey soap. … Basically, CPOP is forcing a hot, extended gel phase with the help of an oven. Any given fat is a blend of several kinds of fatty acids. Evaporation causes a bar of soap to lose weight, shrink somewhat in size, increase in hardness, and become less soluble in water. But, giving soap a full 4 to 6 weeks cure time, at minimum, is important. Ingredients Needed: 13.5oz Distilled Water 9oz Sodium Hydroxide 40.6 oz Olive Oil (pomace grade or extra virgin will both work.) When the pan is cool, wipe away any excess oil with a paper towel. The soap molecules in the liquid phase can be distinctly different than the soap molecules in the crystals. Answer: The method you are referring to is called the Cold Process Oven Process soap method. It is different than the others. Curing Soap. A bar of soap is a complex mixture of solid crystals entirely surrounded by a film of liquid. Now is a good time to send them to us. Test the quality of the lather, longevity, and hardness of the bar and mildness to the skin over at least 3 months, preferably longer. I tried a bar at the sink first and found it lathered dramatically better at 1 year than it did earlier. The glycerin and other water soluble chemicals will be more concentrated as the water content drops. This is a process that most people can't see or measure, so they tend to ignore or discount this as not being important. Check it regularly to make sure it is not feeling sticky or damp – if it does, it needs to sit out and cure longer. Are there other ways to force this shift in the crystal structure and the liquid phase? A single soap molecule in a bar of soap is a fatty acid ion usually combined with a sodium ion. This difference between the liquid and solid phases affects how the soap performs at the sink or in the bath. The water content in the soap might be 50% to 70% of the water originally in the soap bars when they were cut. Try it for yourself, if you have not already, and see what you think. An oleic soap molecule is the same overall length as stearic soap, but it contains a double carbon bond that twists the oleic soap molecule into a "U" shape. When making cold process, oven processed soap, you make soap the cold process way. Drop the filled mold onto table and run a knife through it to remove air pockets; Cover with plastic wrap; Cover with towels; Allow to cool for 6 - 24 hours; Cut into bars. My first real-life experience with the benefits of a longer cure was a soap made with 90% lard. For soaps high in soft oils, a 3+ month cure time is often even more beneficial. Commercial soap makers quickly dry their freshly made soap to the desired water content, and then mix the dried soap chips or noodles under pressure using a machine called a "plodder." As the glycerin and other dissolved chemicals in the liquid phase become sufficiently concentrated, the stearic and palmitic soaps in the liquid phase will form solid soap crystals -- in other words, they want to salt-out. Curing cp soap in garage by: Anonymous I'm a new soaper and I live in Connecticut. Since liquid soap can be made of any fats, including coconut oil, it can be as stripping and harsh as any bar soap -- perhaps more so since the superfat in liquid soap is usually low. So why does soap need to cure anyway? I’ve used it quite a lot. Last but not least is oleic soap. Heat your oven to 170-180°f, then turn it … The weight of the water is the difference in the weight of the piece before and after drying. Salting-out is the process by which soap molecules coalesce from a liquid form into solid soap crystals. There are tons of different methods for making soap and over the years I have decided that this way works best for me because it’s quick, easy and I don’t need to measure any temperatures. Learn how your comment data is processed. It makes a moisturizing yet cleansing bar with tons of lather. I walk your through the entire process and what to look for in the video below. Try a long-term experiment with a few bars of your favorite freshly-made soap. A few days should be long enough for a properly made soap to finish saponifying. When your soap is done with the 4-6 week curing time (or whatever the batch needs), put the bars into a plastic bin. With four seasons here, I'm looking forward to spring so the temperature is more ideal. Step Nine: When gel stage is complete, remove the soap from your oven and allow to cool. Each has its own benefits, but when you combine the processes, you reap the benefits from both. Scoop soap mixture into prepared mold. I turn my oven off and put my soap inside the warm oven and leave it over night. Some soap makers allow for this by curing CP soap a minimum of 4 weeks and HP soap a minimum of 6 weeks. Curing Your Handcrafted Soap. Set timer for 60 minutes. Curiosity got the best of me, however. After you make soap for a while, you'll be able to compare a bar that has cured for several months with one that has just cured a couple of weeks and quickly tell the difference between the two. After the soap is poured into your mold, place it in the oven. Remember from the CPOP post that according to Professor … After one hour, turn the oven off, leaving the soap to sit overnight. Here is how I do it. What could be causing this gradual improvement, even after water evaporation has slowed to a crawl? When it's time to cook with your shiny new skillet, make sure to wash it with hot water (no soap this time) and dry it completely after each use. At this time, most people say the soap is ready for use or for sale. I have to say, once you start soaping, it is hard to stop. The liquid phase surrounding these young crystals is large, and it also contains a jumbled mixture of soap molecules. Initial weight - Oven - dry weight MC - x 100% (2) Oven - dry weight I turn my oven off and put my soap inside the warm oven and leave it over night. Using the oven. At 4-8 weeks, it is true that most soap lathers better, lasts longer, and is milder to the skin, but soap often performs better as even more time goes on. Any more-or-less solid soap, from typical shower and bath soaps to the softer shaving and cream soaps, need time for three things to happen -- to finish saponifying, to evaporate excess water, and to develop a crystal structure. However, if the soap is too high of Ph, you may have used too much lye. The sodium comes from sodium hydroxide, NaOH. Only water evaporation will accomplish that task, so it is a necessary beginning to the curing process. This method of using hot process calls for heat being applied while the soap spends time in the oven. The second aspect of curing soap is the loss of water. The cure time is all about water evaporation. Instead, stir mixture with a wire whisk until opaque and place in a 225 degree preheated oven. Prepare the mold by greasing the bottom and sides with olive oil. Many soap makers let castile soap cure for six to eight months. In summary, the hot process method only speeds saponification; HP does not shortcut the rest of the cure time. I’ve used it quite a lot. Once the gel stage starts, it will start in the center of your mold and work its way outwards towards the edges. This is what Cold Process Oven Process Soap is, a hybrid of both processes. If you notice the soap starting to bubble, leave your oven cracked a little to allow some of the heat to leave. Dry the skillet thoroughly, and then follow the above curing technique, repeating at least 3 to 5 times. Therefore, when the test is done we use the following formula to calculate moisture content. Homemade Soap - Curing the Soap Quickly. Unless I need the oven for something, I leave the soap in the oven for a couple more hours to start cooling down. Reason # 1: Evaporation of the excess water. When you begin to wash with a young bar of soap, it is often the case that the soap will not lather well at first. To track the weight loss due to evaporation, weigh a freshly cut bar of soap right after it is cut and then every few days for a total of 6 to 8 weeks. The more important reason to cure your soap is for the water to slowly evaporate over time, which causes the soap to harden. I was so unimpressed with this soap after using a few bars that I put the rest in a dark corner of my soap cupboard and ignored them. This site uses Akismet to reduce spam. Remove the oven racks as they may also have food stains that need to be removed. With careful control of the drying and plodding steps, the soap will form the desired crystal structure. This soap had definitely improved over the months. When either soap reaches that stage, they are both technically safe to use on the skin. The effect was kind of cool, but it ruined the soap. Check out our YouTube channel! Myristic and lauric and oleic soaps do not salt-out nearly as easily, so they remain in the liquid phase. This is not just wishful thinking on my part -- I keep pretty good notes on the performance of my soaps and know the difference between below average lather and above average. Harden the Soap . Place your soaps in an out-of-the-way place to cure. This method will speed up the time the soap gels at but I'm not so sure if it actually speeds up the cure time. Gel phase is beneficial to soap because it can intensify colors in the soap. Oleic soap molecules will predominate in the liquid phase due to their bulky shape, but there will be a fair number of all the other soap molecules in the liquid, including nearly insoluble stearic and moderately soluble palmitic soaps. Thanks for tuning in today. Depending on the space you have to work with, you can use a bookshelf, utility shelf, bakers rack, or whatever you have that will fit your space. If decorating top of soap, spritz with water and sprinkle on herbs, … 3. Be sure to read this exceptionally informative article on Curing Soap from the Classic Bells website. Over time, the excess liquid in the soap evaporates, the bar hardens and becomes milder. I know it’s hard for me to wait too! CPOP stands for cold process/oven process. Paper will burn at 451ºF/233ºC, so there is no danger of paper towels getting hot enough to burn at the drying temperature. It is easy for any soap maker to learn that cure makes a big difference in soap quality. I love the process of making soap, but what I love even more is developing recipes for it. Homemade Soap: You Don't Have to Wait for a Month for This Soap to Cure. I'd like to make CP which I want to cure in my garage (much more space). At this point, I want to debunk the myth that hot process soap is 100% ready to sell right after it is made while CP soap takes weeks to get to that point. The Sunflair Solar will float if it were to fall into water. Soap is made from three basic ingredients: Fats (oils), Lye (use to turn the oil into soap), and Liquid (used to dissolve the lye, and add other properties to the soap). Layering paper towels. Stearic acid, the longest fatty acid, makes soap that is almost insoluble in water. The reason for the poor lather is the larger amount of less soluble and less bubbly stearic and palmitic soap molecules in the liquid phase in proportion to the more soluble myristic, lauric, and oleic soaps. These soap molecules also gradually trade places with lauric, myristic, and oleic soaps in existing crystals. Since the process is not well understood by handcrafted soap makers, I want to talk about this in more detail. It arguably can take months for this migration to stabilize in a handcrafted bar of soap. For soaps high in soft oils, a 3+ month cure time is often even more beneficial. This is true even though the young soap is relatively soft and contains a fairly large amount of water. Allow to sit for another day or two, unmold and cut. During the cure time water dissolves from your soap creating a harder and longer-lasting bar in your shower. The first aspect of cure is to complete the last lingering bits of saponification to ensure the soap is safe to use on the skin. A "cure" time for liquid soap is mainly to allow time for the last bits of saponification to finish and allow any particles that might be in the soap to sequester (settle out). The soap should be slightly alkaline. Measure the water loss during this time. After 12-24 hours your soap will be ready to unmold. These are often used in … This shift in the kinds of soap molecules in the liquid phase usually creates a faster building, more abundant lather for a smaller amount of work. That means HP soap is safe to use in a few hours and CP soap is safe to use in a day or two. This is the lowest my oven will go, if yours goes lower, you can start at its lowest setting. Check it regularly to make sure it is not feeling sticky or damp – if it does, it needs to sit out and cure longer. The crystals are made of soap molecules fastened together in various 3-dimensional arrangements. Curing = drying. Hot Process Soap Versus Cold Process Soap, How to Make Lotion Sticks & Homemade Lip Balm, https://www.youtube.com/watch?v=_FpufPu-5yk, https://www.youtube.com/watch?v=991_GNVPVA4&t=738s, https://www.youtube.com/watch?v=uuSLJkVcyVs. ( this applies to hot process soap too. ) is too high of,! This video, I leave the pan in the soap from the crystals soap as usual not the! 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I made my soap inside the warm oven and leave it over.! Of the bar, because you are using heatproof molds, like silicone more about salting,. The more important reason to cure anyway by soap by the loaf are cold processed soaps some soap allow. Makers, I 'm looking forward to spring so the temperature is more ideal easily once most the! About this in more detail video below of eco-friendly liquid dish soap say the soap out of the soap based!: 13.5oz Distilled water 9oz Sodium Hydroxide 40.6 oz olive oil soap example! Liquid out of the piece before and after drying I know it ’ heat. Fatty acid ion usually combined with a few drops of eco-friendly liquid dish soap to gel in the and... Acid is medium length and the liquid and solid phases affects how the soap molecules based on these acids. Cushion and weighs in at 1.2 pounds not already, and just be an overall bar...

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