Nicotinamide: A NAD+ Precursor for Epidermal Energy Metabolism and Multidimensional Cutaneous Homeostasis Oral Nicotinamide 10 mg/day for Barrier Repair, Hydration Maintenance, Pigment Modulation, and UV-Related DNA Defense 0009-0007-5798-1996 DOI: 10.5281/zenodo.16926016
