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What is Sodium Hydroxide?
In order to make water and fats mix with eachother you need to saponify them.. Sodium hydroxide and potassium hydroxide are both refered to as lye. This is the chemical responsible for saponification. Without lye there would just be a mess of water and oils.
What is Sodium Lactate?
Sodium lactate is produced by fermenting a source of sugar such as beets or corn. It is the sodium salt of lactic acid. It is salty to the taste and is a very safe additive used to harden the bars of soap. It also acts as a moisturiser and a humectant.
What do you use for colour?
I've been experimenting with naturally colouring soap for a while now. Many people use micas which are widespread, but they do need to be mined. I hope to use botanical sources as often as possible. Madder root for red, chlorophyll for green, turmeric for yellow. With these base colours I can create a beautiful renewable palette as often as possible.