What are GHK-Cu peptides?
USA Today • • health
Key Points:
- GHK-Cu is a naturally occurring copper peptide composed of three amino acids bound to copper, which declines with age and is linked to skin aging and slower healing.
- Topical GHK-Cu products are used in skincare for anti-aging benefits, potentially stimulating collagen and elastin production, improving skin firmness, elasticity, and reducing fine lines with fewer irritations than retinoids.
- Emerging research suggests GHK-Cu may support wound healing, hair growth, and broader regenerative effects including neuron growth and cognitive protection, though most studies are preliminary and not yet confirmed in large human trials.
- Topical use of GHK-Cu is generally considered safe with mild side effects possible, but injectable and oral forms lack sufficient human safety data, and concerns exist about dosing, long-term effects, and product quality.
- Individuals with certain medical conditions, pregnant women, or those on medications should consult healthcare professionals before using GHK-Cu, especially given potential risks related to copper metabolism and unregulated supplement products.