Niacinamide is skincare’s least glamorous overachiever: it calms blemish-prone skin, evens tone, supports the barrier, and plays nicely with almost every other ingredient (check combinations in our ingredient checker). It’s also the rare category where the definitive product is the cheapest one.
Ten per cent niacinamide with zinc for oil control, no fragrance, no fuss, and a price that makes consistency easy — which matters, because niacinamide rewards daily use over 8–12 weeks, not occasional enthusiasm. It layers under moisturiser morning or night and sits happily alongside retinoids on the same schedule.
£4↓ Lowest price we’ve tracked
£4–£5 since 6 Sep
Texture honesty: it’s slightly tacky for a minute after applying — the classic complaint, gone once moisturiser goes over it. Concentration honesty: 10% is plenty; higher percentages mostly raise irritation risk, not results. If your skin is sensitive, even 5% formulas deliver most of the benefit.
The Ordinary’s Skin Support Duo pairs the niacinamide with Hyaluronic Acid 2% + B5 — a sensible hydration partner and usually cheaper than buying separately. Right for a from-scratch routine; unnecessary if you already own a hydrator.
£11.04↓ Lowest price we’ve tracked
£11.04–£13.80 since 6 Sep
Building a full routine around it? Our routine builder will sequence it correctly with everything else you use.
It supports the skin barrier, regulates oil, calms blemish-prone skin and gradually evens tone. Results build over 8–12 weeks of daily use — it's a consistency ingredient, not an overnight one.
Yes to both — niacinamide is one of the most compatible actives in skincare and actually helps buffer retinoid irritation. The old advice to separate it from vitamin C is outdated for modern formulations.
For most skin, no — 10% is well tolerated. Very sensitive skin can start with 5% formulas; going above 10% mainly adds irritation risk rather than benefit.
Niacinamide is an inexpensive, stable, well-studied molecule — there's genuinely little for a premium price to buy you. The Ordinary's formula is the category benchmark at £5.
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