Niacinamide: skincare uses and patient guide

Niacinamide is a form of vitamin B3 used in skincare to support the skin barrier and improve the appearance of uneven tone.

It is a water-based cosmetic and dermatology ingredient found in serums, moisturisers and cleansers. It is different from niacin, another form of vitamin B3.

Niacinamide can help the outer barrier hold moisture more effectively and may calm the look of redness associated with irritation. It is also used in routines aimed at excess oil, blemish-prone skin and uneven-looking pigmentation. Results are gradual and vary with the rest of the routine.

It may be included in daily facial skincare, products for the neck or body, and professionally designed routines for concerns such as sensitivity, dullness or uneven tone. A structured [Cosmeceutical Skincare Programme](/treatments/aesthetic-procedures/cosmeceutical-skincare-programme/) can help match products to the skin’s condition and tolerance.

Other ingredients may be chosen when the main concern is dryness, acne, pigmentation or sun-related change. Moisturisers, sunscreen and targeted actives can complement niacinamide, but combining several new products at once makes irritation harder to trace.

Niacinamide is usually a supportive part of a routine rather than a quick fix. Apply it as directed to clean skin, moisturise when needed and use daytime sun protection. Stop and seek advice if burning, swelling or a persistent rash develops.

Its cosmetic benefit is maintained by continued, consistent use and can fade after stopping. Mild stinging or flushing may occur, especially with a strong formula or a damaged skin barrier. Keep products away from the eyes and follow the label or clinician’s instructions.