LightStim for acne NIB A powerful and effective tool designed to help you treat mild to moderate acne, calm existing breakouts, and restore your skin health. LightStim delivers light energy in a similar way plant absorb light energy from the sun. Each LightStim device uses different wavelength or colors of light lights dim for acne uses blue light to destroy acne, causing bacteria and red light help soothe and calm the skin this helps clear existing breakouts in order to give you visibly improved and healthy looking skin.