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| Question: |
| What does it mean to have no un-reacted caustic soda? |
| Answer: |
| To make soap fats of either vegetable of animal origin are mixed with caustic soda( also known as caustic soda or lye) The result is soap and glycerine. In order to make a normal soap, as compared to a glycerine soap, there has to be unreacted caustic soda in the bar. When making glycerine soap, the glycerine is left in the formula and there is no unreacted caustic soda, but unreacted fats. If unreacted caustic soda is left in the soap it reacts with the skin's natural oils making more soap.This dries the skin out. High quality glycerine soaps with unreacted fats do not strip the skin of its natural oils. |
