The action of benzoyl peroxide is not fully understood; however, it is thought that the medication is absorbed by the skin into the hair follicles where it controls acne by destroying Propionibacterium Acnes, the bacteria that causes acne. Results are typically seen in 2-4 weeks. NOTE: Benzoyl Peroxide kills bacteria, but does not increase the body's resistance to it, nor does it affect sebum production. Therefore, it is important to continue treatment even after the desired results have been achieved. Benzoyl peroxide kills the acne-causing bacteria and has a keratolytic effect, too. This means that it dissolves the keratin that is plugging the skin's pores. Unfortunately, acne skin care products containing this can cause the skin to dry out drastically.How does benzoyl peroxide actually kill bacteria?
It works as a bleach by oxidising molecules on the surface of the bacterium. An oxidising molecule takes electons from another molecule. Usually in the form of Hydrogen or oxygen ions. This creates charged molecules on the surface of the bacterium which disrupts its normal structure and function killing it.
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