This difference is not marginal
Harshbarger is a pharmacist at his family's business, Premiere Pharmacy, which sells compounded medications for weight loss, longevity, pain and other conditions
NAD+ supports cellular energy production and overall metabolic function, aiding in anti-ageing and brain health
doi: 10.1016/j.euf.2020.02.014
However, the vitamin can promote the formation of keratinised cells on the surface of the skin and thus impede drainage from the sebaceous glands Vitamin B7 (biotin) is regarded as the beauty vitamin because it is particularly important for the maintenance of skin, hair and nails Folic acid (vitamin B9) is needed by the skin for cell division and supports various metabolic functions
The role of vitamin C (ascorbic acid) serums are established & mainstream in the management of melasma pigment