Which supplements are of most interest for skin, hair, and nails?

If it’s difficult to obtain adequate levels of the nutrients listed above from the diet, supplementing with them may be advisable.^[1][2]

Additionally, cocoa extract, coconut oil, nicotinamide, and Polypodium leucotomos all show some promise as treatments to support skin health.

Cysteine, lysine, marine proteins (i.e., extracellular matrix components from sharks and mollusks), procyanidins, pumpkin seed oil, B vitamins, vitamin D, vitamin E derivatives, and zinc have all been studied for hair loss.^[3]

There isn’t much research on supplementation for nails, although it’s possible that hair supplements may benefit them because they’re made of similar materials.