Indicatively and honestly: GHK-Cu is a well-characterized cosmetic copper tripeptide with a genuinely plausible, multi-pathway rationale for supporting hair follicles dermal papilla vitality, angiogenesis, suppression of a catagen signal, and an anti-inflammatory, antioxidant tilt supported by in vitro and ex vivo data (much of it from the related peptide AHK-Cu) and by an extensive skin-regeneration literature
Iwamoto, T
Cambridge University Press, 6896
Li MX, Zhang X, Ding, et al
Researchers assessing the blend sometimes reference such ranges when planning experimental protocols for controlled in-vitro testing and preclinical investigation, but interpretation requires careful consideration of the specific research context and methodology
Why is glutathione important for respiratory health