A LED technology that prevents acne. This was given to me as a gift and I never used it. And no longer need it. If you have any questions please ask!!! LightStim for Acne helps calm and heal existing blemishes and reduces future breakouts by eliminating acne-causing bacteria. The non-invasive therapy uses UV-free blue and red lights that work together to destroy bacteria and reduce inflammation without damaging or drying healthy skin. The light emits a gentle warmth in 3-minute treatments that may be used everywhere with zero recovery time. Regain healthy, radiant skin and banish blemishes to the past. 36-LED Light Device, 9-Volt Power Cord, Goggles, and Guide. How to Use Step 1: Cleanse your skin. Step 2: Plug in the Light. Step 3: Turn on the Light. The built-in 3-minute Treatment Timer will begin. Step 4: Place the Light gentle touching your skin and hold in place. If desired, close the eye nearest to the Light. Step 5: After the 3-minute Treatment timer beeps, move the Light to a new area and repeat until you have treated all desired areas. The Light will automatically shut off after 30 minutes of use. FAQs: Q: How long does the device last? A: LightStim is designed with high-end components; the LEDs should never need to be replaced. Q: Does the LightStim take batteries or need to be charged? A: No, the LightStim plugs into an outlet.