More important than concentration is the formulation's pH stability (GHK-Cu is stable between pH 5.0 and 6.5) and the carrier's ability to deliver the peptide past the skin barrier
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GHK-Cu PEPTIDE THERAPY Regenerate Skin, Stimulate Hair Growth, and Heal Naturally At Intra-V, we believe in offering regenerative therapies that help your body repair, rejuvenate, and renew from the inside out
Bobbala D, Alesutan I, Fller M, Huber SM, Lang F
Kojic acid, on the other hand, is a topical ingredient that works directly on the skins surface to lighten dark spots and improve tone