12 weeks in, and my skin has NEVER looked better! GHK peptides are doing their thing. Alright, I need to give you an updateit's been 12 weeks since I started using GHK GHK Cu is one of my personal favorites for a lot of reasons, but I can say without a doubt that it's use effectively stopped and reversed, my receiving hairline. However, there are GHK Cu Peptide Serum Copper Peptide Serum for Tightening, Collagen Boosting & Hydrating Topical GHK Cu with Hyaluronic Acid TikTok Shop GHK vs GHK Cu Without Copper, Basic Peptide Neurogan Health