Vitamin B3 in acid form. It helps even out tone and support the skin barrier. Well tolerated at cosmetic levels.
Topical application
BLimited evidence. One RCT or several controlled studies with limitations.
A vitamin active. Safe at cosmetic levels.
Niacin (nicotinic acid) is a form of vitamin B3. INCI: Niacin. It should not be confused with niacinamide: in skincare it is niacinamide that is studied and that works, while niacin has its own profile. In a formula niacin plays a conditioning role. Its quirk is a vasodilating action: at a sufficient concentration it can cause transient redness and a warm sensation (flushing), which is unwelcome for redness-prone and rosacea-prone skin. Topical clinical data on a standalone skincare effect of niacin are limited. Pregnancy safety. At cosmetic concentrations topical use is systemically negligible and there is no evidence of harm. For rosacea-prone skin, decide on care together with a dermatologist. Tolerance. Allergen potential is low, but transient flushing is possible.
Irritation potential
LowAllergen risk
LowPregnancy
SafeSuitable for
The Evigrade extension adds an evidence panel to iHerb, Sephora, Druni and 12 more stores. This ingredient and every other one in the product show evidence-tier, allergen risk and pregnancy/lactation flags at a glance.
Niacin is considered safe during pregnancy at typical cosmetic concentrations. Systemic absorption through the skin is minimal.
Niacin suits: normal, dry, combination, oily, sensitive.
Vitamin B3 in acid form.
The INCI name is Niacin. It may also appear as: Ниацин, Nicotinic Acid, Никотиновая кислота.
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