Cold process soap is made by combining lye (sodium hydroxide) and oils (such as olive oil, coconut oil, and palm oil) in a process called saponification. This process creates a chemical reaction that produces soap and glycerin.
Because cold-process soap is made without the use of outsourced heat, it retains more of the natural properties of the oils used. This makes cold process soap more moisturizing and gentle on the skin than other types of soap.
Cold-process soap is also typically more expensive than other types of soap because it usually takes 30 days or more to cure.
Rebatch soap is made by melting down and reheating cold-process soap. It has less smoother texture and look than cold-process soap, it is as gentle as cold-process soap. It is less expensive than cold-process soap because it requires less time to cure.
You may notice some goat milk soaps have a lighter color, and some have darker caramel color. We strive to make our goat milk soap below 40°C/104°F to preserve the beneficial properties of the oils and goat milk. However, there may be slight temperature variations when adding the milk to the lye between batches. The higher the temperature is, the darker the goat milk soap will be.