BPC 157 + TB 500 Nasal Spray Polar Peptides BPC 157 Dosages: A Complete Guide for Healing Amino Innovations 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 Defy GHK Cu (glycyl L histidyl L lysine) is a naturally occurring copper binding peptide found in human plasma. As levels decline with age, so may its support of the biological processes involved in collagen production, skin BPC 157 Guide: Mixing, Dosage and Application