All B vitamins, including niacin -- or B3 -- are known to promote healthy skin, hair, eyes and liver function. Niacin is included in creams and lotions to make skin look younger. Adding niacin to your skin-care routine, either in topical treatments or vitamin supplements, may help reverse sun damage and discoloration that naturally occurs with aging. Others use niacin as an irritation-free alternative to tretinoin, an anti-aging derivative of vitamin A.
Purchase an over-the-counter lotion or cream that lists niacin, niacinamide or B3 as an active ingredient. Pat the lotion onto the skin daily after washing with a mild cleanser. Use for six to 10 weeks, then check for signs of improvement in skin texture and discoloration.
Add niacin-rich foods to your diet daily. Include beets, beef, salmon, tuna, swordfish, nuts and seeds, which are all good sources. Buy breads and cereals that are fortified with niacin.
Consult a healthcare professional about whether ingesting a daily niacin or vitamin B complex supplement would be an appropriate addition to your skin-care regimen. These can be purchased over the counter, but talk to a healthcare professional first, as niacin can interact with other drugs and produce side effects.