Ingredient or product comparison
GHK-Cu Cosmetic Results After 1 Week: Comparison Across Delivery Methods
Standard aqueous serum 0.5–1% Minimal surface hydration; no structural change Receptor binding initiated but limited uptake Epidermis only (0.1–0.2mm) Insufficient for meaningful collagen signaling. Most peptide remains on stratum corneum surface Liposomal enc
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- Standard aqueous serum
- 0.5–1%
- Minimal surface hydration; no structural change
- Receptor binding initiated but limited uptake
- Epidermis only (0.1–0.2mm)
- Insufficient for meaningful collagen signaling. Most peptide remains on stratum corneum surface
- Liposomal encapsulation
- 2–3%
- Slight plumping from moisture retention; reduced erythema if inflammation present
- Fibroblast activation begins; early MMP/TIMP modulation
- Upper dermis (0.3–0.5mm)
- First signs of bioactivity detectable via lab markers but not visible cosmetically
- Anhydrous oil base with penetration enhancers
- 3–5%
- Improved hydration; subtle texture smoothing from barrier repair
- Integrin receptor engagement; procollagen mRNA upregulation measurable in vitro
- Mid dermis (0.5–0.8mm)
- Optimal delivery for initiating collagen synthesis pathway. Visible results emerge week 4+
- Microneedling + topical GHK-Cu (clinical setting)
- 5–10% post-procedure
- Temporary erythema from needling; peptide uptake significantly enhanced
- Direct dermal deposition bypasses epidermal barrier; accelerated fibroblast response
- Full dermis (1.0–1.5mm)
- Only method producing detectable firmness improvement by week 2–3 due to mechanical injury + peptide synergy