GHK-Cu
GHK-Cu is a copper-binding peptide. Not currently available; cosmetic topical vs compounded injectable are distinct.
- Routesubcutaneous injection
- Baseline labsNot typically required
- EvidenceLimited human data
- AvailabilityEducation only
How it works
GHK-Cu is a copper-binding tripeptide (glycyl-L-histidyl-L-lysine bound to a copper ion) that occurs naturally in human plasma, saliva, and other tissues, with levels that decline with age. It's one of the most studied 'copper peptides' in skin science, where — applied topically — it's been examined for roles in collagen-related signaling, antioxidant activity, and the orchestration of skin-remodeling processes.
The essential distinction to hold onto: most of the GHK-Cu evidence comes from topical and cosmetic use, and the over-the-counter copper-peptide serum in your bathroom is a fundamentally different product from a compounded injectable. Mechanistic interest in the molecule does not automatically transfer across that gap, and we keep the two contexts clearly separated.
What it's been studied for
- Skin and connective-tissue remodeling (largely topical/cosmetic research)
- Copper-peptide signaling and antioxidant pathways
“Studied for” describes what research has examined — not a promise of any outcome for you.
What the evidence says
Human data for this peptide is limited. A licensed provider can discuss what the current evidence does and does not support for you.
What to expect at Clyne
The injectable form is not currently available to prescribe and is presented here for education. A cosmetic topical product is a different thing from a compounded injectable, and we don't blur that line.
If you're interested, the waitlist is the appropriate next step, and a provider is the right person to discuss the difference between the topical evidence and any injectable use.
Safety & considerations
Don't assume that cosmetic-topical evidence transfers to injectable use — the dose, exposure, and safety questions are entirely different. A provider can explain the distinction and the limits of the current data.
Topical copper peptides are widely available as cosmetics; an injectable is a medical product with a different evidence and regulatory picture, and far less human data behind it.
Regulatory status
This peptide may be compounded by a licensed pharmacy under a patient-specific prescription. Compounded medications are not FDA-approved. A regulatory category that permits compounding is not the same as FDA approval.
Common questions
Isn't GHK-Cu already in my skincare?
Topical GHK-Cu is common in cosmetic serums. That's separate from a compounded injectable, which has a different evidence base, exposure profile, and regulatory status.
Is the injectable available?
Not currently — it's education-only here. The topical/cosmetic version being common doesn't make the injectable an approved or available medical product.
Join the waitlist
GHK-Cu isn't currently available. Add your email and we'll notify you if its status changes — no charge, no commitment.
