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The 2025 Zdrada-Nowak review in International Journal of Molecular Sciences confirmed the clinical evidence for AH-8 in wrinkle reduction, elasticity, and hydration, but flagged the specific limitation that low intrinsic skin penetration is the main efficacy ceiling for topical use [12]

This small molecule compound demonstrates exceptional ability to block nicotinamide N-methyltransferase enzyme activity, preventing NAD+ depletion while activating sirtuin pathways associated with healthy aging and metabolic optimization