Soap making

Soap is created by mixing fats and oils with a base.[3] A similar process is used for making detergent which is also created by combining chemical compounds in a mixer.

Humans have used soap for millennia. Evidence exists for the production of soap-like materials in ancient Babylon around 2800 BC

When used for cleaning, soap solubilizes particles and grime, which can then be separated from the article being cleaned. In hand washing, as a surfactant, when lathered with a little water, soap kills microorganisms by disorganizing their membrane lipid bilayer and denaturing their proteins. It also emulsifies oils, enabling them to be carried away by running water.

Пищевые красители продаются обычно очень концентрированными. Поэтому их иногда следует разбавлять водой. И не делайте очень насыщенный цвет, мыло должно оставаться прозрачным, как желе. Да и цветная пена вам ник чему.