GHK-Cu
01 Summary
A tiny copper-carrying peptide that occurs naturally in the blood and declines with age. It is one of the best-researched peptides for skin — collagen, firmness and repair.
02 How it works
GHK-Cu delivers copper to tissues and switches on genes involved in repair. It stimulates collagen and elastin production, supports wound healing and has antioxidant effects. Natural levels fall sharply between your twenties and sixties.
03 Common uses
04 Run profile
Started low and stepped up over about two months, then held. Once a day, in twelve-week blocks with a four-week break.
The profile shows the shape. Ask for the numbers for your vial, your goal and your timeline.
05 Pairs well with
06 What to watch for
It stings more than most peptides — injection-site irritation, redness and swelling are expected. Mixing with more water (a less concentrated solution), rotating sites and brief icing help. Anyone with Wilson’s disease or another copper disorder should not use it without a doctor.
07 Evidence & status
Not approved (injectable)Strong lab evidence and decades of topical cosmetic use; injectable human data is limited.
Widely used in topical cosmetics; not FDA-approved as an injectable.
08 FAQ
Why does it sting?
It is a known trait of GHK-Cu. More dilution helps a lot.
Injectable or topical?
Topical is common in skincare; injectable is used for a systemic effect.
How long until skin changes?
Collagen remodels slowly — think in months.
Educational information only — not medical advice. The Daily Stack does not sell or supply any products. Talk to a licensed healthcare professional about your own health decisions.