The Ordinary Niacinamide 10% + Zinc 1%

The Ordinary Niacinamide 10% + Zinc 1% — water-based serum, 10% niacinamide for oil control, pore appearance, and tone evenness, 1% zinc PCA for sebum regulation. One of the highest cost-to-evidence-base ratios in over-the-counter skincare. Available from major online retailers. at 10% concentration, niacinamide can cause temporary flushing in users with niacin sensitivity — start with one application daily and monitor for redness; the long-standing reputation for conflicting with vitamin C serums is largely theoretical at normal use concentrations and temperatures, but conservative users should layer them at different times of day to be safe; contains silicone (dimethicone) in the base that silicone-averse users should note; the dropper format makes dosage control slightly imprecise compared to a pump.

The Ordinary Niacinamide 10% + Zinc 1% is the active that earns its place in this minimal routine because niacinamide at 4-10% has the widest published evidence base of any over-the-counter serum ingredient for combination and oily skin. Published clinical studies show topical niacinamide supports sebum regulation, reduces the appearance of enlarged pores, supports skin tone evenness, and supports the barrier by stimulating ceramide synthesis. Zinc PCA at 1% adds sebum-regulating activity targeted at the T-zone. Water-based, lightweight, and compatible with the other four products without sequencing gymnastics. At a budget price per 30 mL from major online retailers, the cost-to-evidence-base ratio is the strongest in this routine. The dropper format is slightly imprecise compared to a pump, and at 10% concentration niacin-sensitive users should start with one application per day.

▶ Video review

How to Use The Ordinary Niacinamide 10% + Zinc | Reduce Hyperpigmentation & Rosacea Flare ups