ghk-cu discovery loren pickart may Prevent Oxidative Stress in Skin by Regulating Copper and Modifying Expression of Numerous Antioxidant Genes The Human Tripeptide GHK, Copper

By your thirties and forties, levels decrease noticeably, and by age 60 they fall to roughly 80 ng/mL. This reduction coincides with physiological changes commonly associated with aging, such as slower wound healing, thinning skin, and a general decline in tissue repair efficiency

Key differences: Matrixyl is a synthetic pentapeptide signaling fragment

How do Glutathione Injections Work for Skin Aesthetic Improvement

Biochem Pharmacol 65:4349 Ogborne RM, Rushworth SA, OConnell MA (2005) Alpha-lipoic acid-induced heme oxygenase-1 expression is mediated by nuclear factor erythroid 2-related factor 2 and p38 mitogen-activated protein kinase in human monocytic cells

If yours doesn't, it's past its prime