Salicylic Acid anchors this routine, exfoliating inside the pores to clear congestion and calm breakouts, while Niacinamide helps regulate sebum and soothe inflammation across the AM and PM treatments. Tea Tree Oil in the Active Cleanse adds natural antibacterial support, and Kaolin Clay in the Clear Mask draws out impurities and absorbs excess oil, leaving skin clearer, smoother and more balanced.