One benefit of niacinamide is how versatile it is as a skin-care ingredient.
“When used topically, niacinamide can improve skin hydration by preventing evaporation of moisture from the skin into the environment. It’s also a natural anti-inflammatory ingredient, so it’s great for calming irritated skin but also good for people with sensitive skin,” says Nazarian.
In addition, niacinamide helps prevent premature signs of skin aging, including boosting collagen production to smooth wrinkles and reduce discolorations, says Nazarian. She recommends the ingredient for people with dry, sensitive, aging, or acne-prone skin.
Another more review, published in September 2017 in Dermatologic Therapy, looked at eight studies in which nicotinamide was used to treat acne. Researchers found that six of those concluded that topical preparations were effective in reducing acne, but the authors note that more research needs to be done to quantify how nicotinamide stacks up to standard acne treatments, such as benzoyl peroxide, salicylic acid, or retinoids.