Brightening ·

Moderate evidence

Niacinamide

What is it?

Niacinamide (nicotinamide) is the amide form of vitamin B3, widely used in serums and moisturizers for its role in supporting skin barrier function.

What does it do?

Commonly used to help improve skin barrier hydration, reduce visible redness and support a more even skin tone; efficacy is most often demonstrated in multi-ingredient formulations rather than in isolation.

Who may benefit?

  • May help with: Hyperpigmentation & Dark Marks
  • May help with: Acne & Congestion

How to use

Typically formulated at 2%-10%.

Ingredients it works with

  • L-Ascorbic Acid — Compatible

    A long-standing skincare myth held that vitamin C and niacinamide react to cause flushing. That conclusion came from a 1960s study mixing the two under extreme heat, not normal skincare conditions — at cosmetic concentrations and modern formulation pH, the two are considered compatible.

    Can be layered or used together.

  • Zinc PCA — Works well together

    Niacinamide and zinc both support sebum regulation and are commonly combined for oily/acne-prone routines via complementary mechanisms.

    Frequently formulated together in oil-control serums.

  • Ascorbic Acid — Compatible

    A long-standing skincare myth held that vitamin C and niacinamide react to cause flushing. That conclusion came from a 1960s study mixing the two under extreme heat, not normal skincare conditions — at cosmetic concentrations and modern formulation pH, the two are considered compatible.

    Can be layered or used together; if a specific product visibly changes colour or texture on mixing, that formulation may be unstable and is worth flagging separately.

Real products containing this

Check this ingredient with another — compatibility notes for every pair
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Sources

Important disclaimer

This page provides general skincare information and is not medical advice, diagnosis or treatment. Ingredient interactions and evidence summaries reflect published, cited sources — not a personal assessment of your skin. For medical skin conditions, rashes, pregnancy/lactation questions or persistent concerns, please consult a licensed dermatologist or HPCSA-registered practitioner.