Experience the Garnier Fast Clear Booster Serum, featuring our highest-ever concentration of 4%* (AHA, Vitamin C, Niancinamide, and Salicylic Acid). You should anticipate +46% radiance*** and -35% excess oil** after the first use. You should anticipate 90% less visible pimples in 28 days****. * Maximum concentration when compared to Garnier Fast Bright Serum \Vitamin Cg= Derivative of Vitamin C during formulation. ** Clinical Assessment, 43 women; *** Clinical Test, 37 women; **** Clinical Evaluation, 81 women.