GHK-Cu

GHK-Cu is a naturally occurring copper peptide found in human plasma, saliva, and urine. It’s commonly used in skincare and hair-care products because of research suggesting it may:

* Support wound healing
* Stimulate collagen and elastin production
* Improve skin firmness and fine lines
* Reduce inflammation
* Promote hair growth in some people

Safety

GHK-Cu is generally considered well tolerated when applied topically, but high-quality clinical evidence in humans is still limited compared with established treatments such as retinoids for skin aging or minoxidil for hair loss.