You have probably already touched this one without knowing. It is the peptide that actually crossed over onto real shelves.
GHK-Cu is a little copper-binding peptide. That is the "Cu," copper on the periodic table. Your body makes it naturally, and levels drop as you age. A lot. So researchers got curious about what happens when there is more of it around. In the lab it is studied mostly for skin: collagen, wound repair, the anti-aging angle.
This is the one that actually crossed over: you will find it in topical serums, because slathering copper peptide on your face is a very different risk conversation than injecting anything. Cosmetic companies got interested long before most people had heard the name.
Go check your fancy serum bottle for "copper peptide." Did it send you to your bathroom cabinet?
Take it to the forum →Ninety seconds is a summary. The reference entry carries the identity, what the paper does and does not show, the dosing figures researchers actually report, and the sourcing notes.
Read the GHK-Cu is blue because the copper is the point entry →