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AHK-Cu was designed for hair follicle cells, not dermal fibroblasts

Production of NAD+ declines sharply with age, leading to hidden cellular damage and visible symptoms like wrinkles, stubborn fat, cognitive fog, delayed recovery, and joint discomfort.[1][2][3] Emerging research suggests that this decline not only accelerates visible aging but also contributes to a cascade of metabolic and neurological issues, making NAD+ restoration a cornerstone of modern anti-aging protocols

While AHK-Cu likely shares some of GHK-Cu broader properties, given the structural similarity, the documented evidence emphasizes scalp and hair applications