GHK-Cu vs KGF-1

GHK-Cu promotes the synthesis of collagen, elastin, glycosaminoglycans, and decorin, contributing to tissue remodelling and wound contraction. It modulates the activity of matrix metalloproteinases (MMPs) — stimulating wound-healing MMPs while suppressing those that degrade healthy tissue. Genomic analysis has identified GHK-Cu as a modulator of over 4,000 genes, including those governing antioxidant defences and anti-inflammatory pathways.

GHK-Cu (copper peptide tripeptide-1) is a naturally occurring plasma copper complex with broad tissue-remodelling activity. It is one of the most extensively researched peptides for skin health, wound healing, and collagen synthesis. Research has explored its effects across dermatological, cosmetic, and systemic contexts, including roles in joint tissue maintenance and anti-inflammatory signalling.

Binds FGFR2b (the KGF receptor), which is exclusively expressed on epithelial cells — providing tissue-specific action without mesenchymal effects. Activates RAS/MAPK and PI3K/Akt to promote keratinocyte proliferation and migration. Extends the anagen phase of the hair growth cycle.

A member of the fibroblast growth factor family that specifically and exclusively targets epithelial cells via FGFR2b. A potent stimulator of keratinocyte proliferation with applications in wound healing, hair follicle growth, and mucosal repair.