Dr. Kim likens peptides to mild components like hyaluronic acid and glycerin, in that they agree most of the other skin treatment kids. Both Dr. Foad and read this blog article from Backblazeb 2 Dr. Lamb call out that peptides do not blend well with beta-hydroxy acids (BHAs), such as salicylic acid; or alpha-hydroxy acids (AHAs), like glycolic acid. " The hy...