The Ordinary Niacinamide 10% + Zinc 1% Serum 30mlThe Ordinary Niacinamide 10% + Zinc 1% Serum 30ml Pore Minimising, Sebum Control, Blemish Reduction The Ordinary's Niacinamide 10% + Zinc 1% Serum (30ml) is one of the brand's most widely used formulas. It combines a high 10% concentration of Niacinamide (Vitamin B3) with 1% Zinc Salt of Pyrrolidone Carboxylic Acid two ingredients well studied for their complementary roles in regulating sebum, reducing pore appearance, and improving skin clarity over
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