SkinCeuticals Cell Cycle CatalystA potent, layerable serum to accelerate skin renewal cycles and amplify anti aging results. Powered in part by our 7. 7% multi acid complex (alpha hydroxy and beta hydroxy acids) and 1% Taurine, Cell Cycle Catalyst is clinically tested to gently peel and enhance cellular turnover at the skins surface to smooth texture, improve the appearance of discoloration, and the look of visible lines. This anti aging exfoliating serum helps maintain optimal