Ingredient or product comparison
GHK-Cu Cosmetic Reddit Reviews Community Comparison
Commercial serum (0.5% GHK-Cu, pre-mixed) 15–25% (user photos, calipers) 180+ (manufacturer sealed) Insufficient concentration. Clinical threshold is 2% minimum Convenient but underdosed; results plateau early DIY from lyophilized powder (2–3% in bacteriostati
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- Commercial serum (0.5% GHK-Cu, pre-mixed)
- 15–25% (user photos, calipers)
- 180+ (manufacturer sealed)
- Insufficient concentration. Clinical threshold is 2% minimum
- Convenient but underdosed; results plateau early
- DIY from lyophilized powder (2–3% in bacteriostatic water)
- 60–70% (user photos, clinical-grade calipers)
- 21–28 (refrigerated, sealed aliquots)
- Reconstitution errors, copper ratio mistakes
- Matches clinical trial efficacy when prepared correctly
- DIY from powder (distilled water only)
- 40–50% (user photos)
- 7–10 (refrigerated)
- Short shelf life, no antimicrobial preservative
- Works but requires fresh batches weekly
- Pre-mixed high-concentration serum (2%+, commercial)
- 50–60% (user photos)
- 90–120 (unopened)
- Expensive; degrades rapidly after opening
- Best option for users who won't prepare solutions
- Frozen batches (user attempt at long-term storage)
- 10–20% (significantly reduced)
- N/A (freezing destroys peptide structure)
- Ice crystal formation breaks copper-peptide bond
- Never freeze GHK-Cu. Refrigerate only