GHK Cu is everywhere right now. Hair growth, skin repair, inject this and look 25 again. You can inject GHK for years, but if the body receiving the signal isn't set up to GHK CU for Sale Tripeptide 1 3rd Party Tested US Made Neurogan Health, Copper Peptide GHK CU, 120 mcg, 60 Tablets iHerb IGF 1 promotes the development and cytotoxic activity of human NK cells Nature Communications Everyone's calling GHK Cu a miracle peptide But let's separate marketing from mechanism. GHK Cu isn't magic. It's a signal. A signal that: Supports tissue repair Modulates inflammation Enhances collagen + Enhanced