Skin Doctors Zit Zapper has a unique combination of witch hazel, tea tree oil and salicylic acid which helps calm red inflammation and dries out spots - fast!. Skin Doctors Zit Zapper uses Tea Tree Oil as an antibacterial to cleanse the skin whilst the Witch Hazel is used as a tonic and astringent for the treatment of inflamed skin. The combination of Salicylic Acid and Zinc Sulphate penetrates pores and heals the tissue, subsequently preventing the skin from scarring. Skin Doctors Zit Zapper’s unique combination of ingredients exfoliates, unblocks and calms all of those unwanted spots, so you can carry on your day in c dence.