Additives, colourants, glycerin and Lye info:
Glycerin is a by-product of soap making, handmade soaps contain natural occurring glycerin.
sodium hydroxide (lye) is the key ingredient that causes saponification, which is the necessary chemical reaction to create soap. After saponification, there is no lye present in the soap.
Colourants: Include herbal/root powders and infusions, mica's, titanium dioxide and clays.