ghk-cu collagen synthesis is getting a lot of attention right now, and for good reason. This is not just a “skin peptide.” It's a copper-binding tripeptide with documented effects on gene expression, What Is GHK-Cu? Copper Peptide

Copper serves as a cofactor for several enzymes your body relies on for repair work: lysyl oxidase for collagen and elastin cross-linking, superoxide dismutase for antioxidant defense, cytochrome c oxidase for cellular energy production, and tyrosinase for melanin synthesis

Receptor and NO axis (BPC-157): drives VEGFR2 internalization, modulates eNOS, supports focal adhesion turnover via FAK and paxillin

Brain tissues were placed in PBS for 24 hours before being embedded in paraffin wax and sectioned onto histology slides

The second myth is that more is always better, and that often triggers irritation, more breakouts, and more redness, especially when someone layers too many actives at once