Original The Ordinary Niacinamide 10% + Zinc 1% Serum Made in canada High Strength Vitamin & Mineral Blemish Formula White colour (Nia) Product details of The Ordinary - Niacinamide 10% + Zinc 1% Niacinamide (Vitamin B3) is indicated to reduce the appearance of skin blemishes and congestion. A high 10% concentration of this vitamin is supported in the formula by zinc salt of pyrrolidone carboxylic acid to balance visible aspects of sebum activity.