@terianxio: I've been using copper peptide serums for years, but adding a peptide skin booster beforehand completely changed the game for me. My skin feels like it absorbs everything better, and the copper peptide serum leaves my skin looking smoother, bouncier, and more hydrated. If you're already investing in a copper peptide serum, don't sleep on the layering step. #CopperPeptides #PeptideSerum #KoreanSkincare #AntiAgingSkincare #GlassSkin