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At optimal concentrations, GHK-Cu increases mRNA production for collagen types I and III, elastin, proteoglycans, and glycosaminoglycans, while laboratory studies show that topical application for 12 weeks improves collagen production in 70% of subjects compared to 50% with vitamin C and 40% with retinoic acid

Vitamin B12 deficiency can occur for a range of reasons, including reduced dietary intake, impaired absorption, gastrointestinal conditions, and autoimmune causes

Unregulated Sourcing Purity, dosing, and sourcing are not verified through FDA testing or oversight

10.1038/sj.bjp.0701568 46 CrabbeJ

Helps support cellular repair and regeneration

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