They haven't gone through FDA approval, but they've built a following among wellness influencers and some doctors, who say they help with muscle recovery, reduce inflammation, promote longevity, or just improve overall health
It uses a vortex technology to infuse the skin with brightening serums
Int J Mol Sci 2018 (PMC6073405) Maquart FX et al
American Thyroid Association (2019) Hashimotos thyroiditis (lymphocytic thyroiditis)FAQ
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