1. Collagen Synthesis in Fibroblast Cultures
An early cell-culture study reported that GHK-Cu stimulated collagen synthesis by fibroblasts at very low concentrations without changing cell number. This is mechanistic in-vitro evidence and does not establish wrinkle reduction in a finished cosmetic.
Citation: Maquart et al., FEBS Letters 238 (1988), 343–346. PMID: 3169264.View source










