Ingredient or product comparison
GHK-Cu Cosmetic Work for Topical Skin Research: Clinical vs Research-Grade Comparison
Research-Grade GHK-Cu ≥98% by HPLC ICP-MS confirmed 1:1 ratio Buffered 5.5–6.5 Propylene glycol 15–20% 12 months at 2–8°C Required for reproducible data. Peptide integrity and copper chelation verified at batch level Clinical Cosmetic Formulation 90–95% typica
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- Research-Grade GHK-Cu
- ≥98% by HPLC
- ICP-MS confirmed 1:1 ratio
- Buffered 5.5–6.5
- Propylene glycol 15–20%
- 12 months at 2–8°C
- Required for reproducible data. Peptide integrity and copper chelation verified at batch level
- Clinical Cosmetic Formulation
- 90–95% typical
- Copper content unverified
- Often unbuffered or incompatible actives
- Variable base
- 6–12 months ambient
- May produce visible results but lacks traceability for research protocols
- Generic 'Copper Peptide' Serum
- 70–85% or undisclosed
- Copper added separately
- pH 4.0–8.0 (unstable)
- Aqueous base
- 3–6 months
- Copper and peptide present but not chelated. Minimal fibroblast activation expected
- Peptide-Only Formulation (No Copper)
- Variable
- N/A. No copper
- Any
- Lacks the copper ion required for receptor binding. Cannot replicate GHK-Cu mechanism