Every claim made for a topical peptide depends on one unglamorous question: does the molecule actually cross the stratum corneum? Here is what the studies that measured GHK-Cu transport directly found, including where two 2025 reviews disagree.
Learn what GHK-Cu is, how it works in skincare, its safety profile, and what current research suggests about this copper peptide.
Explore Loren Pickart’s 50‑year research legacy that uncovered GHK‑Cu, its skin‑repair potential, and how it became a staple in topical cosmetics.
Explore the proposed mechanisms of topical GHK-Cu (copper tripeptide-1) for skin repair, collagen support, and gene modulation based on current research.
Learn where the copper peptide GHK-Cu is found naturally in human tissues, its biological roles, and the evidence behind its age-related decline.
Are you an astute skincare enthusiast, perhaps someone who has already navigated the landscape of retinoids and alpha hydroxy acids,
GHK-Cu is a cosmetic ingredient in topical serums rated safe by CIR. Learn how it differs from research peptides and what the science actually says.
Copper tripeptide-1 and GHK-Cu refer to the same copper-bound peptide. Learn the naming differences, chemistry, and what to look for on cosmetic labels.