Paraben-free, noncomedogenic, dermatologist-tested, and gentle enough for daily use. Goes on smoothly and invisibly under makeup. Helps reduce the appearance of post acne marks. Formulated with skin-brightening botanicals and a Vitamin C derivative to reduce the appearance of discoloration while helping to prevent new dark spots from forming. Differin Dark Spot Correcting Serum features 4% Niacinamide, a brightening ingredient that's clinically proven to reduce the appearance of dark spots and discoloration.