-
Preservative Advice
Hi,My formulation contains tetra hexadecyl ascorbate. Can I use Neodefend as preservative? will it react with sodium benzoate and release benzene? Or should I go with Silverion -
1 Reply
-
The sodium benzoate /benzene fear would only be relevant for ascorbic acid, not a derivative because this oil-soluble derivative would not break down under normal cosmetic conditions for any reaction to occur. Personally I think the whole ascorbic acid creating benzene is just being exaggerated.
https://www.fda.gov/food/chemicals/questions-and-answers-occurrence-benzene-soft-drinks-and-other-beveragesIf you are really concerned add a chelator (which you probably should add anyway) to tie up any free metals that could contribute
Log in to reply.