Dermalogica new MediBac Clearing Adult Acne Treatment Kit is a system is formulated specifically to treat adult acne. Each product, with its unique acne-fighting and clearing ingredients, is designed to be layered upon the skin to provide around-the-clock, maximum control of the four main factors that contribute to acne: overactive sebaceous glands (the production of too much oil), dead skin cell accumulation, bacteria and inflammation.