Purify oily and congested skin with the Niacinamide 10% + Zinc 1% Serum from The Ordinary. Harnessing the powers of advanced science and high concentrations of vitamins and minerals, the lightweight serum infuses skin with an intense dose of Niacinamide (Vitamin B3), which has been proven to minimise the look of blemishes and discolouration. The addition of Zinc Salt balances the formula, helping to regulate sebum production for a visibly clearer and refined complexion.