dermalogica Special Clearing Booster is a 5% benzoyl peroxide treatment fortified with zinc sulfate, tea tree and sage that helps control bacteria, reduce irritation and shield against free radical damage. It quickly dries breakouts while soothing redness and helping regulate oil production to control future breakouts.How to use: Before moisturizing, apply as a spot treatment to problem areas and allow to dry. Apply every 6-8 hours as needed until your breakout clears. Style Name:Dermalogica Special Clearing Booster. Style Number: 1020145. Available in stores.