GHK Cu is a copper peptide used in regenerative medicine to support collagen production, tissue repair, and cellular renewal throughout the body. It's for individuals looking to improve skin firmness, brightness, and visible Amazon.com: GHK Cu Copper Peptide Serum Anti Aging Face Serum for Skin Firming, Wrinkle Reduction, Hydration & Collagen Boosting, 30ml(1 fl oz) : Beauty & Personal Care GHK Cu Topical Spray Wells Pharmacy Network If you're using GHK Cu and it stings a little (which is common) this one's for you In this reel I'm sharing the small tweaks that have helped me make peptide injections