- Usual strength
- 2–5% in most products
- Use
- Morning and/or night
- Good with
- Moisturisers, sunscreen, hyaluronic acid
- Pregnancy
- Generally considered safe; check with your doctor
Niacinamide is one of the most tolerated skincare actives. It works quietly on several common concerns at once, which makes it a useful first active for many people.
Benefits
- Helps regulate oil and the look of enlarged pores
- Supports the skin barrier, which can reduce dryness and irritation
- Can soften the look of dark spots and uneven skin tone over time
- Calms redness linked to acne
How to use niacinamide
- Apply a few drops of serum to clean skin, before moisturiser
- Can be used once or twice a day
- Results build gradually over 8–12 weeks
- Higher strengths are not always better; 5% is effective for most people and less likely to irritate
Precautions
- Some people get mild flushing or tingling, especially at high strengths; reduce frequency if this happens
- If you have active rosacea or eczema, patch test first
- It supports, but does not replace, medical treatment for moderate or severe acne or melasma
Who is it suitable for?
Niacinamide suits most skin types, including oily, acne-prone and combination skin. Dry and sensitive skin usually tolerates it well at lower strengths.
Patch test first. Apply a small amount behind the ear or on the inner arm once a day for a few days. If you notice redness, burning, itching or swelling, do not use the product, and see a dermatologist if the reaction does not settle.
Common questions
Can I use niacinamide with vitamin C?
Yes. Modern formulations can be used together, or you can use vitamin C in the morning and niacinamide at night if your skin feels sensitive.
Will niacinamide clear my acne?
It can help with oil and redness, but acne that keeps coming back, leaves marks or is painful needs a dermatologist's assessment and treatment.
This guide is for general education and is not medical advice. If you are pregnant, breastfeeding, using prescription treatment or have a skin condition, ask your dermatologist before starting a new active ingredient.