This device uses the same phototherapy treatment developed by dermatologists to reduce skin blemishes. The handheld unit administers safe 410 nanometer blue and 660 nanometer red UV-light (found naturally in the sun) to improve skin health without prescription drugs. A study in the British Journal of Dermatology showed blue and red light phototherapy eliminates p-acne bacteria (the most common cause of acne) and reduces skin blemishes by 76%. Testing determined that phototherapy was nearly twice as effective as benzoyl peroxide, the main active ingredient in common skin blemish creams. As easy to use as a cordless shaver, the device simply rests against your skin and automatically delivers the phototherapy for three minutes. Includes two interchangeable heads for red and blue phototherapy, safety glasses, and a recharging base. Provides up to nine three-minute treatments on a single charge; requires 12 hours to recharge. Base plugs into AC. 7" H x 2 1/4" Diam. (5 oz.)