I'm a longevity doctor 3 peptides to help live longer Have you used peptides? What are your thoughts? Let me know below Peptides are short chains of amino acids that play vital roles in cellular signaling and repair throughout the body. PDGF injections are trending fast online, but many patients are not being told the full story including that most PDGF products were never FDA approved for injection into the face. We're now seeing Copper peptides explained what are the differences between copper peptides and GHK CU peptides? What they actually do for the skin in terms of repair and collagen, and what you can and cant mix Amazon.com: Skin Perfection Copper Peptide Serum GHK CU 1% for Face & Hair Copper Peptides for Skin, Hair, & Scalp 1% Blue Liquid for Face, Neck, Body, Scalp Multi Use Serum Booster with Peptides for Hair Growth: Science, Efficacy & Practice Hubmed