It is important to be clear about where the evidence comes from: GHK-Cu is used overwhelmingly topically in cosmetics , where most of its human data small studies of creams and serums for skin firmness, fine lines and wound repair actually lies [6]
45 431440, Le Fol V, At-Assa S, Sonavane M, Porcher J M, Balaguer P, Cravedi J P, Zalko D and Brion F 2017a In vitro and in vivo estrogenic activity of BPA, BPF and BPS in zebrafish-specific assays
Its concentration decreases significantly with age, from approximately 200 ng/mL at age 20 to 80 ng/mL by age 60
Whether you are measuring 5mg in units , 7.5mg in units , or converting from units back to milligrams , the math is reliable
Great product, shipping is fast, processing times have gotten longer but still acceptable Fast, quick and easy