GHK-Cu occupies an unusual position: a naturally occurring peptide that is also a common cosmetic ingredient and a subject of ongoing research.
A naturally occurring complex
GHK is a short peptide that binds copper. It occurs naturally in human plasma, and measured levels decline with age.
Skin research
Studies have examined its role in skin remodeling and the appearance of aging skin. Topical formulations are widely available; clinical contexts are narrower and require professional guidance.
Key Takeaways
- GHK-Cu is a naturally occurring copper-binding peptide.
- Plasma levels decline with age.
- It is common topically; clinical use requires provider oversight.
