Ingredient or product comparison
12. Topical vs subcutaneous research protocols
GHK-Cu peptide is used in two main research formats: Topical: Concentration: 0.01–2% depending on application Cosmetic skin research: 0.05–0.2% typical Hair follicle research: 0.05–0.1% Wound-healing topical: 0.5–2% Vehicle: aqueous gel, cream, or hydrogel — c
This source-based comparison does not add ratings or recommend a winner.
- GHK-Cu peptide is used in two main research formats:
- Topical:
- Concentration: 0.01–2% depending on application
- Cosmetic skin research: 0.05–0.2% typical
- Hair follicle research: 0.05–0.1%
- Wound-healing topical: 0.5–2%
- Vehicle: aqueous gel, cream, or hydrogel — compatibility with copper binding requires formulation care
- Frequency: daily or twice-daily
- Subcutaneous:
- Dose: typically 1–3 mg per administration
- Frequency: daily or alternating days
- Duration: 4–12 week study blocks
- Site: rotating abdominal or thigh subcutaneous injection
- Oral bioavailability of GHK-Cu is poor; oral formats are not commonly used for research endpoints.