Ingredient or product comparison
GHK-Cu Cosmetic vs Topical: Product Comparison
Typical Concentration 0.01–1% (label claim; actual bioavailable peptide often 0.1–0.5%) 2–5% verified peptide content (reconstituted from lyophilised powder at known molarity) Research-grade delivers 5–10× higher peptide per application Purity Verification Not
This source-based comparison does not add ratings or recommend a winner.
- Typical Concentration
- 0.01–1% (label claim; actual bioavailable peptide often 0.1–0.5%)
- 2–5% verified peptide content (reconstituted from lyophilised powder at known molarity)
- Research-grade delivers 5–10× higher peptide per application
- Purity Verification
- Not required. No HPLC or mass spec mandated by FDA cosmetic regs
- ≥98% purity confirmed via HPLC, mass spectrometry, and amino-acid analysis
- Cosmetic peptides may contain 2–5% impurities and deletion sequences
- Regulatory Classification
- FDA cosmetic (21 CFR 700). Appearance claims only, no therapeutic efficacy required
- Laboratory reagent ('for research use only'). Not approved for cosmetic or medical use
- Research peptides bypass cosmetic labeling but require institutional oversight
- Intended Use
- Consumer skincare. Hydration, surface texture improvement, anti-aging appearance claims
- Investigational applications. Cellular assays, wound healing studies, collagen synthesis research
- Cosmetic for appearance; research for mechanism elucidation
- Shelf Stability
- Formulated with preservatives and stabilisers; shelf life 12–24 months at room temp
- Lyophilised powder stable 24+ months at −20°C; reconstituted solution stable 28 days at 2–8°C
- Cosmetic serums trade stability for convenience; research peptides require cold storage
- Carrier Base
- Aqueous gels, emulsions with humectants, thickeners, and fragrance
- Defined solvents (bacteriostatic water, propylene glycol, DMSO) or liposomal carriers
- Cosmetic bases prioritise texture; research bases optimise penetration