The clear plus is the first and only device to combine powerful bacteria-killing blue light with sonic vibration and gentle warming for clinically proven clearing results. 414 nm blue light works by producing oxygen singlet"s which attach to the P.acnes bacteria (acne-causing bacteria). These singlet"s have a phototoxic effect on key porphorins, causing the P.acnes bacteria to self-destruct The large treatment surface treats acne breakouts fast. Together, these three technologies deliver unsurpassed speed and effectiveness for calm, clear, beautiful skin.