D. R. Harris & Co., Ltd. has been crafting shaving soaps for over 200 years! I think they've figured things out along the way!!!
The chemical formula for "traditional" soap (as opposed to modern day detergents) is long established and is no big secret. Pioneers made tallow based lye soap from animal fat on the American prairies in a cast iron pot, and they weren't considered artisans. Ancient civilizations made beer and soaps. So called "artisans" use this same chemistry in small batches with much less quality assurance / quality control than established "traditional" makers.
The chemical formula for "traditional" soap (as opposed to modern day detergents) is long established and is no big secret. Pioneers made tallow based lye soap from animal fat on the American prairies in a cast iron pot, and they weren't considered artisans. Ancient civilizations made beer and soaps. So called "artisans" use this same chemistry in small batches with much less quality assurance / quality control than established "traditional" makers.