A copper peptide your skin naturally produces. It plays a role in collagen production, wound healing, and skin elasticity. Your body makes less of it as you age.
What is this used for?
What dose is typical for your goal?
- Typical dose
- 1–2 mg
- How it's taken
- Injection under the skin or topical cream
- How often
- Once a day
- Most common starting point
- 1 mg daily (injection) or applied topically twice daily
Based on published studies and what providers typically prescribe.
Important safety info
- Cycling is mandatory — continuous daily injection can cause copper accumulation with metabolic and neurological risks.
- Reconstitute with bacteriostatic water only. Saline destabilizes the copper complex.
- Topical GHK-Cu does not produce the same systemic effects as injectable.
Cycling
Cycle 8–12 weeks on / 4–8 weeks off. Continuous daily use risks copper accumulation.
These are typical doses from research and real prescriptions — not a recommendation for you specifically. Your provider will adjust based on your body, your goals, and your health history.
Want your exact dose? A provider will personalize this for you.
Find a ProviderHow do you take it?
These are typical doses from research and real prescriptions — not a recommendation for you specifically. Your provider will adjust based on your body, your goals, and your health history.
What to expect
1 / 4Week 1-2
Early skin changes — some users report smoother texture and reduced redness.
Week 3-4
Collagen production effects become visible. Skin looks firmer and more elastic.
Week 6-8
Hair growth effects begin to show for those using it for hair. Skin improvements are at their peak.
Week 8+
Many people continue long-term for maintenance, especially topical applications.
Individual experiences vary. Results depend on your body, goals, and protocol adherence.
How well researched is this?
Strong Animal & Lab Research
Decades of published studies on skin regeneration. Strong topical clinical data, but less data on systemic injections.
Legal status
Currently restricted by the FDA and cannot be legally compounded. This status may change — we'll update this page when it does.
2026 reclassification status updates coming soon.
Purity
Purity measures how clean and accurate the compound is. Higher purity means fewer contaminants and more reliable dosing.
HPLC Purity Tested
Always require a Certificate of Analysis (CoA) from a US-based compounding pharmacy.
Common questions
Ready to start?
Consult with a licensed provider to determine the right protocol for your goals.