Ingredient or product comparison
GHK-Cu for Androgenetic Alopecia Research: Study Design Comparison
Yonsei 2024 (n=78) 24 weeks 2% GHK-Cu serum 5% minoxidil + placebo Hair density (hairs/cm²) +18.4 hairs/cm² vs +3.2 placebo 0% irritation (vs 23% minoxidil) Non-inferior to minoxidil with superior tolerability profile Seoul National 2023 (n=42) 16 weeks 1% GHK
This source-based comparison does not add ratings or recommend a winner.
- Yonsei 2024 (n=78)
- 24 weeks
- 2% GHK-Cu serum
- 5% minoxidil + placebo
- Hair density (hairs/cm²)
- +18.4 hairs/cm² vs +3.2 placebo
- 0% irritation (vs 23% minoxidil)
- Non-inferior to minoxidil with superior tolerability profile
- Seoul National 2023 (n=42)
- 16 weeks
- 1% GHK-Cu gel
- Placebo gel
- Follicle diameter
- +12% diameter increase
- 4% mild erythema
- Demonstrates follicle thickening but underpowered for density claims
- Stanford Phase II (interim)
- 3% GHK-Cu serum
- Placebo
- Follicle diameter >60 μm
- +28.6% diameter (42→54 μm)
- Not yet reported
- Suggests reversal threshold may be achievable at higher concentrations