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There is a general consensus that BDNF may represent an important measurable biomarker however, the poor reproducibility of BDNF measures has to date prevented its validation for clinical purposes

GHK-Cu stimulates synthesis of type I collagen (structural support), type III collagen (tissue flexibility and repair), glycosaminoglycans, chondroitin sulfate, dermatan sulfate, and the small proteoglycan decorin

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Prevents premature skin aging Vitamin B12 is crucial in the production of new blood cells responsible for skin hair, and nail health