The Ordinary Niacinamide Serum 10% + Zinc 1% for Clear SkinThe Ordinary Niacinamide 10% + Zinc 1% Serum The Ordinary Niacinamide Serum is a high strength, science backed formula combining 10% Niacinamide (Vitamin B3) with 1% Zinc PCA to regulate sebum, minimise pores, reduce blemishes, and deliver visibly clearer, more balanced skin. Key Benefits Sebum Regulation: Zinc PCA controls excess oil production, reducing shine and keeping skin looking fresh. Pore Minimising: Niacinamide refines the appearance of