Ingredient or product comparison
GHK-Cu for Skin Aging: Research vs Cosmetic Comparison
Topical serum (liposomal) 0.5–1.0% GHK-Cu 6–8 weeks (fine lines), 12 weeks (texture) Gradual dermal penetration, sustained low-dose collagen stimulation Requires consistent twice-daily application; results plateau without continued use Best for long-term maint
This source-based comparison does not add ratings or recommend a winner.
- Topical serum (liposomal)
- 0.5–1.0% GHK-Cu
- 6–8 weeks (fine lines), 12 weeks (texture)
- Gradual dermal penetration, sustained low-dose collagen stimulation
- Requires consistent twice-daily application; results plateau without continued use
- Best for long-term maintenance and prevention. Requires formulation expertise to avoid oxidation
- Subcutaneous injection
- 2–5 mg per session, biweekly
- 2–3 weeks (localized areas)
- Direct dermal delivery at therapeutic concentrations
- Requires reconstitution knowledge and sterile technique; not suitable for large surface areas
- Fastest visible improvement in targeted zones. Ideal for research protocols or clinical settings
- Oral supplementation
- 1–3 mg daily (capsules)
- 8–12 weeks (systemic effects possible, limited dermal-specific data)
- Systemic absorption, distributed across all tissues (not skin-targeted)
- Bioavailability unclear; most absorbed peptide degrades in GI tract or liver before reaching skin
- Insufficient evidence for skin-specific benefits. Topical or subcutaneous routes are more reliable