BeautySpaceNK Foreo ESPADA Blue LED Light Technology Acne Clearing Pen, features ultra powerful blue LED light technology paired with T Sonic pulsations that are clinically proven to quickly and effectively treat acne prone skin. The 30 second acne treatment device works to destroy acne causing bacteria deep within the skin, as well as blemishes on the surface for healthy, beautifully clean and smooth skin. Light Pulse technology uses blue LED light to penetrate below the skin’s surface to quickly yet noninvasively eliminate acne causing bacteria at the source