Ingredient or product comparison
GHK-Cu Cycle Protocols: Injection vs Topical Comparison
Subcutaneous Injection 0.5–2mg daily 85–95% systemic 8–12 weeks Deep dermal remodeling, wound healing research, systemic collagen synthesis studies Topical Serum (2–5% formulation) Applied 1–2× daily 3–8% dermal penetration 12–16 weeks Localized photoaging, su
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- Subcutaneous Injection
- 0.5–2mg daily
- 85–95% systemic
- 8–12 weeks
- Deep dermal remodeling, wound healing research, systemic collagen synthesis studies
- Topical Serum (2–5% formulation)
- Applied 1–2× daily
- 3–8% dermal penetration
- 12–16 weeks
- Localized photoaging, surface texture improvement, minimal systemic exposure
- Microneedling + Topical
- 1–2% solution post-needling
- 15–25% enhanced penetration
- 6–8 week cycles
- 6–8 weeks
- Targeted scar remodeling, localized collagen induction, combines mechanical and biochemical stimuli