GHK‑Cu is a naturally occurring copper‑binding peptide your body already makes. It’s a tiny tripeptide—glycine, histidine, and lysine—that tightly binds a copper ion, and this combination plays a major role in tissue repair, skin regeneration, and cellular signaling.

What it is

GHK‑Cu is found in human plasma, saliva, and urine, and levels decline significantly with age (about 200 ng/mL at age 20 → ~80 ng/mL by age 60). This drop tracks with slower wound healing, thinning skin, and reduced tissue repair. But the good news is, you can replenish this vital peptide!

What it does

Research shows GHK‑Cu can:

• Stimulate collagen and elastin production

• Support wound healing and tissue repair

• Reduce inflammation and oxidative stress

• Improve skin firmness, thickness, and clarity

• Influence thousands of genes involved in regeneration (over 4,000 genes modulated)

• Dermatology sources also highlight its role in skin remodeling, barrier repair, and long‑term skin quality, though results are gradual rather than dramatic.