Ingredient or product comparison
Best Peptides for Hair Loss Researchers: Compound Comparison
GHK-Cu (Copper Peptide) TGF-β and VEGF upregulation in dermal papilla cells; collagen crosslinking via lysyl oxidase 1–3% in culture media or topical formulations Lyophilized at −20°C; reconstituted at 2–8°C 48–72 hours at room temp; 7 days refrigerated Most e
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- GHK-Cu (Copper Peptide)
- TGF-β and VEGF upregulation in dermal papilla cells; collagen crosslinking via lysyl oxidase
- 1–3% in culture media or topical formulations
- Lyophilized at −20°C; reconstituted at 2–8°C
- 48–72 hours at room temp; 7 days refrigerated
- Most extensively validated in follicle culture studies; degradation is rapid and light-sensitive
- TB-500 (Thymosin Beta-4)
- Angiogenesis through HGF/KGF signaling; actin sequestration prevents fibrosis
- 10–100 µg/mL in vitro; 200–500 µg/kg in vivo
- Lyophilized at −20°C; reconstituted in bacteriostatic water at 2–8°C
- 28 days refrigerated with bacteriostatic water
- Strong evidence for prolonging anagen phase; requires daily dosing in animal models
- BPC-157
- VEGF receptor-2 activation; nitric oxide synthase-mediated vasodilation
- 1–10 µg/mL in vitro; 200–500 µg/kg in vivo
- Best suited for ischemia or inflammation models; limited direct follicle data
- GHRP-2 / GHRP-6
- Systemic IGF-1 elevation via growth hormone secretion; indirect follicle stimulation
- 100–300 µg/kg subcutaneous in animal models
- Lyophilized at −20°C; reconstituted in sterile water at pH 6.0–7.0
- 14 days refrigerated; oxidation-sensitive
- Requires pituitary function; not applicable to in-vitro follicle studies