Subcutaneous Injection Sites and Instructions for Safe Self Administration Many people think injecting peptides like BPC 157, GHK Cu, or TB500 directly over a painful area sends the peptide straight into the damaged tissue. But thats not how it works. When you inject GHK Cu Peptide in Dubai Skin Repair, Collagen, and Regeneration Product Question] Most effective way to deliver GHK Cu (Copper Tripeptide 1) through skin? : r SkincareAddiction