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Among the many widely used ingredients in skincare products, one stands out: niacinamide, a form of vitamin B3. Frequently found in serums, moisturizers, cleansers, and eye creams, this compound can reduce redness, balance oil production, support hydration, and minimize the appearance of pores. For example, a 12-week study using 5% niacinamide conducted on 50 women showed significant improvements in fine lines, wrinkles, hyperpigmentation, redness, and skin elasticity.
Chemically, niacinamide is an organic, water-soluble compound known as the amide form of niacin. Its small molecular size allows it to cross the skin barrier and reach target cells. It strengthens the barrier by increasing ceramide production.
Niacinamide is known for its gentleness and is well tolerated by most skin types, including sensitive skin, which is a significant advantage over harsher chemical ingredients. However, as with any compound, dosage matters. While most people can tolerate niacinamide well even at 10% twice daily, which is considered safe for topical use, higher concentrations can cause mild burning, itching, or redness in some users.
In South Korea, niacinamide is a popular and versatile skincare ingredient, found in numerous products from brands like COSRX, Beauty of Joseon, and Anua. Niacinamide plays an important role in skincare, yet it remains just one part of the larger science of keeping skin healthy.
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