Originally Posted by rosc2112
Cosmetic grade != food grade... I'd never try ingesting non-food grade stuff like glycerine (or peroxide as another example. Food grade h2o2 is fine in small amounts, and is purported to even be beneficial. Same with glycerine. Smoking it, otoh, I'm not so sure about being beneficial
are you saying you think since it is cosmetic grade that it is not good to use?
idk what the USP differentiation is between cosmetic and food grade glycerin