The Express by Déesse PRO Light Therapy Mask is a non-invasive Light Emitting Diode (LED) treatment mask that uses the most clinically proven wavelengths of light to flood the skin in light and stimulate the skin's natural rejuvenating and healing processes to treat a wide range of conditions.Red and Near-Infrared wavelengths stimulate the synthesis of collagen, elastin and hyaluronic acid, resulting in the rejuvenation of skin texture, tone and visible appearance.