Don't ask me how to pronounce niacinamide. Tricky pronunciation aside, niacinamide is an iconic ingredient that should probably be in at least one of your skin care products (open in new tab) (if not, you should get to it). To take a closer look at this hero ingredient, we spoke with Dr. Marie Hayag (open in new tab), founder and board-certified dermatologist at 5th Avenue Aesthetics (open in new tab), and celebrity cosmetic dermatologist Paul Jarrod Frank D. (opens in new tab) and answered any questions you may have about the effects of niacinamide on the skin.

Niacinamide, also known as vitamin B3, is a "water-soluble vitamin found in meat, fish, wheat, and small amounts of vegetables," according to Dr. Hayag. Niacinamide is often found in skin care and cosmetics to improve the skin's barrier function and overall texture, while targeting dark spots (opens in new tab).

Its scientific explanation is best explained by Dr. Hayag: "The health of the skin barrier is determined by the amount and structure of these components, and niacinamide increases the synthesis of free fatty acids, ceramides and cholesterol. Ultimately, this leads to a healthier skin barrier and improved skin hydration." It is the production of these fatty acids that produces strong, glowing skin.

According to Dr. Hayag and Dr. Frank, other skin-lightening benefits of niacinamide include:

The best part is that most people can benefit from this ingredient. Dr. Hayag warns that some irritation may occur, but should subside with repeated use. Dr. Frank recommends that people with sensitive skin avoid overuse of products containing this ingredient, as the slightest irritation can become severe. Basically, do not overdo it.

However, those with dry or acne-prone skin should really consider adding a niacinamide-specific moisturizer or serum to their routine. For acne-prone skin, niacinamide's anti-inflammatory and sebum-regulating properties are beneficial." In addition, (niacinamide) helps supply the skin's barrier with the necessary components to keep the skin hydrated and alleviate dryness," says Dr. Hayag.

While there is no single best way to add niacinamide to a daily routine, Dr. Frank recommends mixing niacinamide into a serum or topical application for daily care. He says, "Combine niacinamide with a moisturizer (open in new tab) to help soothe and hydrate the skin. It can also brighten the skin by evening out skin tone and help with wrinkles (open in new tab) due to its ability to supply collagen."

We want to be careful not to overuse niacinamide-based products. So you don't need both a serum and moisturizer with this versatile ingredient. If you don't know where to start using it, see our dermatologist-recommended products.