Carbon Theory Tea Tree Oil & Citric Acid Breakout Control Facial Purifying TonicCarbon Theory’s U.K lab formulated 250ml Facial Purifying Tonic contains premium Tea Tree Oil and Pink Grapefruit Extract in a deep cleansing, pore reducing formulation that minimises shine & keeps your complexion clear. Tea Tree Oil is a natural antiseptic which reduces inflammation and keeps skin clear & health & Citric Acid Toner removes dead skin cells, speeds cell turnover and is effective in treating acne, pigmentation, clogged pores and dark spots. New to Boots the breakout busting brands new Facial Purifying Tonic!