Introduction to Cold Process Soap
While some people consider melt and pour soap to be “soap making” many of those who make a bar of soap from scratch don’t consider this to be actual soap making. It is true that you can have a lot of fun with melt and pour soaps and that you can make a lot of really cool projects, but it isn’t quite the same as the real deal so to say. Cold process soap is one of the most popular methods. It does, however, take more work then the basic melt and pour project. You will be combining lye (caustic soda also known as sodium hydroxide) with fats or oils. This process causes a chemical reaction between the two ingredients creating soap. While soap can be made in your own home, lye is often dangerous to work with and should be used cautiously.
Things you will need:
In order to make cold process soap you will need a glass measuring cup, preferably four cups. You will need a glass dish so that you can measure out your oils and fats. You will need a few spoons. A scale is also very important because your fats and oils as well as your lye will be measured by weight. You need a pan that isn’t aluminum or a pan and a mixing bowl (I prefer glass). Finally you will need a thermometer.
Ingredients:
Soap is mainly fat and or oil and lye. You can then add colorant, fragrance, and additives for special soaps. It is also possible to affect the soap by choosing your oils and fats. Different oils have different results on the soap. Some cost fast lather with tiny bubbles that disappate quickly. Others have strong lathers that last a long time with big bubbles. This can be helpful in choosing your oils and fats and how much of those ingredients that you need. You can also choose them according to how they help the skin.
Recipe:
Soap recipes can be used. These are ones that other people have put together and named. Some have fancy ingredients like milk, milk powder, honey powder, tea, or cucumbers. These can be great soaps, but it should be noted that unless the recipe was created by someone who knows what they are doing then you should check the values on a lye calculator. Lye calculators are available all over the net. They make it very easy to enter the amounts of oils or fats that you are using. It will then tell you how much water and lye you need to make your soap. This is important because if you have too much lye then your soap will still have lye in it and it could burn the skin. If it doesn’t have enough then it won’t have enough soap and you will have a oil bar. You can also use lye calculators for making your own soap recipes.
The Process:
Making soap isn’t a hard process. You should be very careful with the lye (most people suggest that you wear rubber gloves, a rubber apron, eye protection, and some recommend a mask). You should also make sure it is well venelated and that you aren’t breathing in the vapors. Now that you know the safety aspects you should know the basic process of making soap.
1. Melt and warm your oils and fats together. Depending on what you are using this could take a little while (beeswax is one that takes awhile to melt as well as cocoa butter).
2. Mix your lye into your water. Make sure you gently add the lye to the water. Doing it the other way can cause splashing and burns. You want to stir as you are adding the lye. It will get very warm very quickly.
3. Wait. It takes a short time, but you will want your oils and your lye to cool down. Your recipe may have a temperature at which to mix them. If it does follow this. If it doesn’t then 110 degrees is often standard. The important thing is that both the lye water and the oils should be about the same temp and both should be fairly warm.
4. Mix together. If you have a pan that isn’t aluminum that you have melted your oils in you can slowly add the lye (drizzle it into the oil/fat) directly to the pan. If you don’t have an aluminum free pan you can move your oils to your mixing bowl and then drizzle the lye into the oil/fat.
5. Stir or blend. You can stir your soap now or blend it with a hand mixer or a stick mixer. You will need to do this till trace. Trace is the point where the soap has thickened enough to hold itself up for a time. You can either take the spoon and slice the surface, if your mark stays awhile you have reached trace. Or you can drizzle some of the soap mixture onto the surface of the soap. If it is trace then it will hold the drizzled soap up for a few seconds in a small pile.
6. Once you have reached trace you can add your additives such as fragrance, color, herbs or flowers, and superfatting oil. It is really up to you and recipe.
7. After all your additives are in the soap then you can pour it into your molds. It is sometimes helpful to have sprayed the molds with a little cooking spray. Your soap should spend 24 hours in the molds.
8. You will need to let your soap cure for 4 to 6 weeks before using it. This is to make sure that they lye and the oils have all become soap. After 4 to 6 weeks you can use the soap as you wish.
Advantages:
Cold process soap takes awhile to cure, but it is a smooth bar of soap that can be luxurious and easy to use. You can also design bars of soap to help with certain skin problems or to be used for certain skin types. You can also get very creative and make some truly beautiful soap.

