Ingredient or product comparison
GHK-Cu for Hair Loss: Product Comparison
Standard aqueous serum 0.5–1.0% 6.0–7.0 Passive diffusion 30–45 days before degradation Low. Most products lack third-party purity verification Avoid unless refrigerated and used within 60 days of opening Liposomal serum 2.0% 5.0–5.5 Phospholipid vesicle fusio
This source-based comparison does not add ratings or recommend a winner.
- Standard aqueous serum
- 0.5–1.0%
- 6.0–7.0
- Passive diffusion
- 30–45 days before degradation
- Low. Most products lack third-party purity verification
- Avoid unless refrigerated and used within 60 days of opening
- Liposomal serum
- 2.0%
- 5.0–5.5
- Phospholipid vesicle fusion
- 90–120 days when stored below 25°C
- High. Aligns with clinical trial formulations
- Best option for consistent daily use; requires pH test strips to verify batch stability
- Anhydrous gel (silicone-based)
- 1.5–2.0%
- N/A (non-aqueous)
- Occlusive penetration enhancement
- 180+ days
- Moderate. Fewer published studies on anhydrous delivery
- Suitable for users with oily scalps; less elegant application feel
- Compounded prescription (503B facility)
- 2.0–3.0%
- 4.8–5.2
- Custom vehicle (often liposomal)
- 60–90 days refrigerated
- High. Pharmaceutical-grade synthesis with CoA
- Most reliable purity but requires prescriber; our full peptide collection offers research-grade alternatives for non-clinical applications
- Concentration alone doesn't predict results. PH stability and vehicle type are equally critical. A 2% product at pH 7.0 degrades to <1% active GHK-Cu within three weeks, while a 1% product at pH 5.2 remains stable for three months. Always verify the pH with test strips before first use if the manufacturer doesn't list it explicitly.