Silk'n Flash & Go with the new 5000 Flashes cartridge installed is an innovative, FDA-cleared, light-based device for permanent hair removal on the body, all in the comfort of your own home. The new, high-tech design of the Flash and Go applicator allows users to properly target any area that requires treatment. No area is too big or too small With Flash & Go , you can permanently remove unwanted body hair, even on sensitive areas (like the bikini line) or smaller, targeted zones. Flash & Go uses highly sophisticated Home Pulsed LightTM (HPL) technology to safely and effectively provide proven long-term hair removal results for both men & women. The Flash & Go unit plugs into the wall, while the pulse speed ensures a quick treatment, so you won't have to worry about the battery dying before you finish. A unique skin color sensor is built into the Flash & Go to measure the treated skin complexion at the beginning of each session and occasionally during the session for skin safety. F