Ingredient or product comparison
Peptides Help With Hair Growth: Type Comparison
Copper Peptides (GHK-Cu) Binds TGF-β receptors, upregulates VEGF, reduces oxidative stress in follicle stem cells 1.0–2.0mM topical, twice daily 12–16 weeks for measurable density increase Most clinically validated. 18.3% density improvement in controlled tria
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- Copper Peptides (GHK-Cu)
- Binds TGF-β receptors, upregulates VEGF, reduces oxidative stress in follicle stem cells
- 1.0–2.0mM topical, twice daily
- 12–16 weeks for measurable density increase
- Most clinically validated. 18.3% density improvement in controlled trials. Requires daily application and light protection to prevent oxidation.
- Biomimetic Peptides (Capixyl, Anagain)
- Mimics IGF-1 and FGF7 signalling to prolong anagen phase and activate stem cells
- 0.5–1.5% in carrier base (proprietary blends)
- 16–24 weeks for visible thickness change
- Effective but concentration often undisclosed in commercial formulations. Best results when combined with microneedling.
- Thymosin Beta-4 Derivatives
- Promotes actin polymerisation in matrix cells, increases anagen follicle percentage
- 0.1–0.5mg subcutaneous or topical with penetration enhancer
- 8–12 weeks for anagen phase shift
- Rapid onset but requires consistent delivery. Injectable forms show faster results than topical.
- Myristoyl Pentapeptide-17
- Stimulates keratin gene expression, increases shaft diameter through protein synthesis
- 0.05–0.2% in leave-on serum
- 20–28 weeks for cosmetically significant change
- Slower mechanism. Works at transcriptional level rather than receptor activation. Long timeline limits adherence.