Can this ingredient list be correct? - Vitamin C serum
I am currently a cosmetic chemist student and wondering more and more if some ingredient lists are chemically feasible. For example, this one is claimed to be a 23% Vitamin C serum:
Water, L-Ascorbic Acid, Alkyl Benzoate, Panthenol-D, Carbomer, Ferulic Acid, Sclerotium Gum, Optiphen, Hyaluronic acid
As far as I understand, everything is water soluble except for Alkyl Benzoate. Or is there a water-soluble Alkyl Benzoate? Or is it C12-15 Alkyl Benzoate? If the latter where is the emulsifier? I also do not see any ingredient that would set correctly the pH of the formula for 23% Vitamin C.
What do you think? Can this be a correct ingredient list and if so how?
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