Our 20% Niacinamide & 1% Zinc serum is our MAX strength serum. Packed with 20% Niacinamide, the serum helps to clear and minimise pores, resulting in clear and clean skin. While zinc hydrates and protects the skin from day-to-day damage and stressors. 20% Niacinamide clears and minimizes pores. Zinc keeps skin hydrated and protects it from environmental stressors