Ingredient or product comparison
GHK-Cu for Skin Glow Research: Delivery Method Comparison
Topical serum (0.5–2%) Stratum corneum to upper papillary dermis 30–70% increase after 12 weeks (variable by formulation) Requires daily application, pH-sensitive, degrades in light/air Best for maintenance and prevention; limited efficacy on deep photoaging M
This source-based comparison does not add ratings or recommend a winner.
- Topical serum (0.5–2%)
- Stratum corneum to upper papillary dermis
- 30–70% increase after 12 weeks (variable by formulation)
- Requires daily application, pH-sensitive, degrades in light/air
- Best for maintenance and prevention; limited efficacy on deep photoaging
- Microneedling + topical application
- Papillary and reticular dermis
- 180–310% increase in localized treatment areas
- Professional administration recommended, 4–6 week intervals
- Gold standard for dermal remodeling; combines mechanical injury response with peptide signaling
- Subcutaneous injection (mesotherapy)
- Direct dermal delivery
- 200–400% increase in injection sites (localized effect)
- Requires trained practitioner, potential for bruising/swelling
- Most targeted approach for specific areas (e.g., periorbital hollowing, nasolabial folds)
- Liposomal encapsulation topical
- Enhanced dermal penetration vs standard topical
- 90–150% increase after 12 weeks
- Higher cost, stability challenges in formulation
- Improved over basic topicals but still limited vs microneedling