GHK-Cu Copper Peptide Explained: The Research (Philippines Guide)

Your blood carries a tiny copper peptide. By age 60, levels are less than half of what they were at 20. It is called GHK-Cu: three amino acids, glycine, histidine and lysine, bound to copper. Loren Pickart discovered it in human plasma in 1973, when plasma from young people made older liver tissue behave more like young tissue in the lab.

The main idea is a remodelling signal. GHK-Cu appears to tell skin cells to build new collagen and clear out damaged matrix. A 2018 review summarised small human skin studies. In one, a facial cream used for 12 weeks by 71 women was reported to increase skin density and reduce fine lines.

In another 12-week study, collagen improved in 70% of women using GHK-Cu, against 50% with vitamin C and 40% with retinoic acid. In diabetic rats, it improved wound healing. These skin studies were small, and the review was co-written by the discoverer. We found no published controlled trials of injected GHK-Cu in humans.

GHK-Cu is used in topical cosmetics. Injectable GHK-Cu is not an approved medicine. In the US, it left the FDA's compounding safety concern list in April 2026 after its nomination was withdrawn, and is due for future advisory review. If you are sourcing research peptides in the Philippines, Primara Labs publishes independent lab reports you can verify yourself.

Guides at primaralabs.com.