The Ordinary Niacinamide 10% + Zinc 1% is a high‑strength, water‑based serum (10% niacinamide + 1% zinc PCA)Reduces blemishes & congestion: Helps clear breakouts and smooth uneven texture. Controls excess oil: Zinc PCA regulates sebum production and reduces shine. Minimizes pores: Regular use can visibly reduce pore size. Brightens skin: Improves dullness and supports a more even tone. Strengthens skin barrier: Niacinamide enhances moisture retention and barrier function.