What concentration is typically studied?

Controlled facial-skin studies commonly evaluated leave-on formulations containing about 2% to 5% niacinamide.

Can it help with acne?

A small eight-week acne trial found 4% nicotinamide gel performed comparably to 1% clindamycin gel; however, this limited evidence does not make cosmetic niacinamide a replacement for prescription treatment.

Is it suitable for sensitive skin?

Sensitive skin types may use it, but a patch test is recommended first, especially if the skin is reactive or the routine already causes irritation.

moderate evidencebarrierbrighteningcalmingaging-welltexture

Niacinamide

Niacinamide is a form of vitamin B3 used in skincare to support barrier function and may help the appearance of uneven tone and visible aging signs.

Skin types

normal, dry, combination, oily, sensitive (patch test first)

Natural source

Niacinamide is a form of vitamin B3; skincare-grade niacinamide is manufactured for use in cosmetic formulations.

Caution notes

Patch test first if your skin is reactive or your routine already causes irritation.

On the label

Niacinamide

What it is

Niacinamide is a form of vitamin B3. Skincare-grade niacinamide is manufactured for use in cosmetic formulations.

What it actually does

•Supports synthesis of ceramides and other stratum-corneum lipids involved in barrier function.
•Reduces melanosome transfer from melanocytes to keratinocytes, which may help the appearance of uneven pigmentation.
•Small controlled studies reported improvements in several visible photoaging measures with consistent topical use.

How it works

→Human and laboratory evidence indicates topical nicotinamide can support synthesis of ceramides and other stratum-corneum lipids involved in barrier function.
→Experimental and clinical evidence indicates niacinamide can reduce melanosome transfer from melanocytes to keratinocytes, which may help the appearance of uneven pigmentation.
→Small controlled clinical studies report improvements in several visible photoaging measures with consistent topical use.

Who should use it

✓Normal skin
✓Dry skin
✓Combination skin
✓Oily skin
✓Sensitive skin (patch test first)

Who should skip it

✕Individuals with reactive skin or routines that already cause irritation should patch test first.
✕Individuals experiencing burning, swelling, or a persistent rash should stop use and seek professional advice.

How to use it in your routine

→Controlled facial-skin studies commonly evaluated leave-on formulations containing about 2% to 5% niacinamide.
→Introduce one niacinamide product at a time so irritation or pilling can be traced to a specific formula.
→A higher percentage is not automatically better; formula quality, frequency, and tolerability matter.

Cosmetic niacinamide is not a substitute for medical care for persistent acne, eczema, melasma, or other skin disease. If burning, swelling, or a persistent rash develops, stop use and seek professional advice.

Concentration & formulas

→Controlled facial-skin studies commonly evaluated leave-on formulations containing about 2% to 5% niacinamide.
→A higher percentage is not automatically better; formula quality, frequency, and tolerability matter.
→Introduce one niacinamide product at a time so irritation or pilling can be traced to a specific formula.

Myths vs. reality

✕Niacinamide is a medical treatment for skin diseases.

✓Cosmetic niacinamide is not a substitute for medical care for persistent acne, eczema, melasma, or other skin disease.

✕Higher concentrations are always more effective.

✓A higher percentage is not automatically better; formula quality, frequency, and tolerability matter.

Frequently asked questions

What concentration is typically studied?: Controlled facial-skin studies commonly evaluated leave-on formulations containing about 2% to 5% niacinamide.
Can it help with acne?: A small eight-week acne trial found 4% nicotinamide gel performed comparably to 1% clindamycin gel; however, this limited evidence does not make cosmetic niacinamide a replacement for prescription treatment.
Is it suitable for sensitive skin?: Sensitive skin types may use it, but a patch test is recommended first, especially if the skin is reactive or the routine already causes irritation.

Sources

The research behind our moderate evidence rating.

📄Nicotinamide increases biosynthesis of ceramides as well as other stratum corneum lipids to improve the epidermal permeability barrier — British Journal of Dermatology, 2000
📄Niacinamide: A B vitamin that improves aging facial skin appearance — Dermatologic Surgery, 2005
📄The effect of niacinamide on reducing cutaneous pigmentation and suppression of melanosome transfer — British Journal of Dermatology, 2002
📄Moisturizing effects of topical nicotinamide on atopic dry skin — International Journal of Dermatology, 2005
📄Topical nicotinamide compared with clindamycin gel in the treatment of inflammatory acne vulgaris — International Journal of Dermatology, 1995

Products we like

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Related guides

Dig deeper into how niacinamide works for specific goals.

Niacinamide for Aging Skin: A Balanced Guide

published

Explore how niacinamide supports skin barrier function and pigmentation appearance in aging skin, based on available clinical evidence and practical usage considerations.

Niacinamide for Sensitive Skin: Benefits and Risks

published

Explore how niacinamide supports skin barrier function and hydration while understanding potential irritation risks for sensitive skin types.

Niacinamide Maintenance Routine Guide

published

Learn how to integrate niacinamide into a simple daily maintenance routine while respecting skin tolerance and barrier health.

Patch test new products. Introduce one at a time. If you’re dealing with persistent irritation or a medical skin condition, talk to a dermatologist.Last reviewed: August 29, 2026