Releases wavelengths of blue light that penetrate deep into your skin to kill acne-causing bacteria, P. acnes, and soothe inflammatory acne vulgaris. Basically, within P. acnes bacteria, there are small molecules known as porphyrins. When exposed to 420 nm and shorter wavelengths of light, porphyrins generate free radicals that attack and kill P. acnes bacteria.
3-Step System features a cleanser, toner and repairing lotion. The medicated cleanser gently exfoliates skin and boosts the delivery of its acne-fighting benzoyl peroxide (2.5%). The toner has glycolic acid that continues to clean/exfoliate skin. It also has other moisturizing and calming ingredients to improve skin's tone. Finally, the gentle repairing lotion also contains 2.5% benzoyl peroxide to help to kill acne-causing bacteria below the surface of your skin.