Ingredient or product comparison
GHK-Cu Cosmetic Signaling Pathway: Formulation Comparison
Standard cream (pH 6.5–7.0) Low. Copper precipitation likely Minimal TGF-β, negligible VEGF 0.5–2% GHK-Cu Stratum corneum only Insufficient pH control negates copper chelation. Limited cosmetic effect Acidified serum (pH 5.0–5.5) Moderate. Copper soluble but p
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- Standard cream (pH 6.5–7.0)
- Low. Copper precipitation likely
- Minimal TGF-β, negligible VEGF
- 0.5–2% GHK-Cu
- Stratum corneum only
- Insufficient pH control negates copper chelation. Limited cosmetic effect
- Acidified serum (pH 5.0–5.5)
- Moderate. Copper soluble but peptide may aggregate
- TGF-β upregulation 40–60%, VEGF 20–30%
- 1–5% GHK-Cu
- Upper epidermis
- Adequate for surface-level effects; insufficient for deep dermal remodeling
- Liposomal GHK-Cu (pH 5.0–5.5)
- High. Encapsulation protects copper and enhances delivery
- Full pathway activation: TGF-β 70–100%, VEGF 50–80%, TIMP 40–60%
- 2–10% GHK-Cu
- Papillary dermis
- Gold standard for cosmetic efficacy. Measurable collagen synthesis within 4–6 weeks
- Nasal spray / systemic delivery
- Highest. Bypasses stratum corneum entirely
- Systemic effects including wound healing acceleration
- 1–5 mg/dose
- Systemic distribution
- Research-grade applications; not for cosmetic use