Copper Peptides

Copper Peptides are small protein fragments that bind tightly to copper ions, with GHK-Cu being the most famous and well-researched. Your body naturally produces these peptides, but levels decline significantly as you age. **Why copper matters:** Copper is essential for enzymes involved in wound healing, collagen production, and antioxidant defense. Copper peptides deliver this copper directly to tissues while also sending "repair" signals to cells. **What the research shows:** • Stimulate collagen and elastin production for firmer skin • Accelerate wound healing across multiple tissue types • Reduce inflammation and oxidative damage • Can modify expression of over 4,000 genes toward healthier patterns • Support hair follicle health and growth **Where you'll find them:** Widely used in anti-aging skincare serums and creams, wound care products, and hair growth treatments. Available in topical and injectable forms. **Age-related decline:** GHK-Cu levels drop from about 200 ng/mL at age 20 to around 80 ng/mL by age 60. This decline may contribute to slower healing and visible skin aging. **Popular forms:** • GHK-Cu: The most researched copper peptide • AHK-Cu: A variant with an alanine substitution --- **Sources:** Pickart L, et al. (2015) Oxidative Medicine and Cellular Longevity. DOI:10.1155/2015/648108 | Pickart L, et al. (2008) Journal of Biomaterials Science. DOI:10.1163/156856208784909435

Human clinical evidence is limited and heterogeneous: many studies are small, short-term, or uncontrolled, and there are no large randomized controlled trials for cosmetic outcomes; systemic uses are unstudied in humans.

GHK is a naturally occurring human tripeptide (glycyl-histidyl-lysine) found in plasma and tissues; it binds copper(II) to form GHK-Cu. Topical application is the best-studied route; mechanistic effects include upregulation of collagen/elastin synthesis and modulation of matrix metalloproteinases.