Ingredient or product comparison
Hair Loss Researchers GHK-Cu Protocol: Clinical vs DIY Comparison
Peptide Purity ≥98% HPLC-verified GHK-Cu, pharmaceutical-grade synthesis Research-grade peptide from verified supplier with CoA (certificate of analysis) Home protocols work if peptide purity matches clinical grade. Cosmetic-grade peptides (75–85% purity) show
This source-based comparison does not add ratings or recommend a winner.
- Peptide Purity
- ≥98% HPLC-verified GHK-Cu, pharmaceutical-grade synthesis
- Research-grade peptide from verified supplier with CoA (certificate of analysis)
- Home protocols work if peptide purity matches clinical grade. Cosmetic-grade peptides (75–85% purity) show 40–50% reduced efficacy due to inactive analogs competing for receptor binding
- Concentration
- 3mM (1.02mg/mL) in phosphate-buffered saline, pH 7.4
- Same. Dissolve 10mg in 9.8mL PBS or bacteriostatic water
- Replicable at home with precision scale (±0.1mg accuracy) and sterile technique
- Application Frequency
- 1mL applied to scalp 5× weekly, minimum 4-hour contact time
- Identical. Consistency matters more than daily use
- Evidence supports 5-day protocol over 7-day; additional applications don't improve outcomes but increase irritation
- Storage Conditions
- 2–8°C in light-protected vials, discarded after 28 days
- Refrigerate in amber glass; replace monthly
- Critical compliance point. Room-temperature storage reduces potency 60% within one week
- Monitoring Method
- Trichoscopy every 4 weeks, follicle density per cm² measured
- Self-assessment via standardized photos (same lighting, same angle, same distance) every 30 days
- Objective measurement difficult at home but photo documentation at weeks 0, 4, 8, 12 allows side-by-side comparison
- Response Timeline
- Measurable increase in follicle density at 8–12 weeks in 58% of subjects
- Expect same. No visible change before week 6; shedding in weeks 2–4 is normal (telogen hairs clearing before anagen restart)
- Non-responders (42%) show no change by week 12. Continuation beyond 16 weeks without response unlikely to yield results