Vitamin C Oil Serum Review: Kiehl’s, A’kin, Holy Snails, MooGoo
In my last post I reviewed some water-based vitamin C serums containing ascorbic acid (Paula’s Choice, Ultraceuticals and Ausceuticals). Today, I’m looking at some oil-based serums containing a slightly modified version of vitamin C: ascorbyl isotetrapalmitate. There are a few reasons to use a modified version of ascorbic acid (vitamin C) instead of the real thing. Since ascorbic acid isn’t …