I always use "sodium hydroxide" when giving soap to family or friends because sodium hydroxide was used in making the soap and if labeling is necessary, then it's done with ingredients that were used from the greatest to the least in descending order. The water has evaporated, too. I don't leave that off the label, either.
Re: Selling
An email exchange between the FDA and the President of the AHPA from the group's archives on
the web here: ( This has some great info about FDA regulations and labeling. It's interesting to note, among other things, that "saponified oil" is not in the INCI dictionary. )
http://www.ahpa.org/portals/0/pdfs/09_0 ... beling.pdfQuick excerpt: "Soaps making cosmetic claims (e.g., beautifying, moisturizing) which include products such as deodorant soaps, bath soaps, hand and toilet soaps, and detergent bars are regulated as cosmetics (and must follow the cosmetic labeling requirements). Medicated and antimicrobial soaps are regulated as drugs. Soap products that are both cosmetics and drugs (those making both cosmetic and drug claims e.g., moisturizing and antibacterial
claims) must meet the requirements of both cosmetics and drugs (including labeling)."
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FDA regulations here:
http://www.fda.gov/Cosmetics/default.htmAnd here:
http://www.fda.gov/Cosmetics/GuidanceCo ... 074201.htm