I make home made lye soap and it has about 1% glycerine in it by the molecular weight of soap vs glycerine content. To check this out go to www.waltonfeed.com and follow the links to where he talks about the molecular structure of soap and how to make it. I find lye soap doesn't taste bad to brush your teeth with and it's not as drying to my skin as store bought soap (any kind).
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