Ingredient or product comparison
GHK-Cu Wrinkle Reduction: Protocol Comparison
Standard Facial Protocol 1–2% (10–20mg/mL) Once daily (PM) 8–12 weeks for visible wrinkle depth reduction Optimal balance between efficacy and oxidative stress risk. Backed by peer-reviewed clinical trials High-Concentration Protocol 2.5–3% (25–30mg/mL) No add
This source-based comparison does not add ratings or recommend a winner.
- Standard Facial Protocol
- 1–2% (10–20mg/mL)
- Once daily (PM)
- 8–12 weeks for visible wrinkle depth reduction
- Optimal balance between efficacy and oxidative stress risk. Backed by peer-reviewed clinical trials
- High-Concentration Protocol
- 2.5–3% (25–30mg/mL)
- No additional benefit vs 2% at 12 weeks
- Higher copper load increases oxidative stress without proportional collagen synthesis gain. Not recommended
- Twice-Daily Protocol
- 1% (10mg/mL)
- Morning + evening
- Comparable to once-daily 2% at 12 weeks
- Dividing total daily dose reduces per-application copper load but requires strict pH management before each use
- Spot Treatment Protocol
- 2% (20mg/mL)
- Once daily, targeted areas only
- 10–14 weeks for localised improvement
- Effective for deep nasolabial folds or isolated forehead lines. Surrounding untreated areas may show contrast