Cold process soap: what happens during production

Cold process sounds as if everything stays cool during production. That is not entirely the case. The name describes a process in which the soap paste is not specifically cooked as it is in the hot process method.

Oils, fats and lye

For solid soap, suitable fats and oils are processed with a precisely calculated sodium hydroxide solution. This creates salts of fatty acids, which is soap, and glycerin. Mixing triggers a chemical reaction that releases heat.

The soap paste becomes thicker and is poured into a mold. Depending on the recipe, further ingredients are added. Once hardened, the block can be removed from the mold and cut.

Patience is required afterwards

Our cold process natural soaps mature for at least eight weeks. During this time, the bars lose water and become firmer. Craftsmanship is therefore not only reflected in the mixing, but also in the careful storage and testing.

What the term does not reveal

Cold process does not automatically mean fragrance-free, vegan or suitable for every skin type. This depends on the ingredients and the intended use. Not every solid cleanser is manufactured in this way.

This is an explanation, not a recipe for you to follow. Lye is caustic and requires expertise, suitable protective equipment and a safe workplace. If you would simply like to get to know the finished product, start with the product information and application tips in our library.