GHK-Cu
Copper-binding peptide
Effect index
+0.51
95% CrI
[0.28, 0.72]
Effect index +0.51, 95% confidence interval 0.28 to 0.72
GHK-Cu is a naturally occurring copper-binding peptide. People report using it for skin firmness, wound and scar appearance, and hair.
What is measured
The effect index reflects self-reported skin and hair outcomes among people who already use GHK-Cu, read with a 95 percent credible interval.
What is established
The signal separates from no effect and is solid across the reporting population, with a relatively low share of non-responders.
What is not established
This entry covers self-reported skin and hair outcomes only. It does not establish a mechanism, a dose response, or any outcome outside that scope. It is not a clinical endorsement and it is not medical advice. We never supply or prescribe.