The Remington iLIGHT Pro Plus Quartz brings fast, gentle, and easy hair removal to you in the privacy of your homeFeatures a long-life quartz cartridge 30,000 flashesLine powered eliminates the need for rechargingLonger Lasting Permanent Results- Up to 94% hair reduction in just 3 treatmentsProfessional Intense Pulsed Light Technology with a powerful 16 Joules per flash for greater hair reduction in fewer treatmentsFDA Cleared and Clinically ProvenIntended Use:Intended for use only on body areas below the neck- legs, underarms, bikini lines, chest, stomach and armsIntended for use only on light to medium skin tonesIntended for use only on naturally black or brown hair Treatment Expectations:1 to 2 weeks after initial treatment hairs in treated areas will begin to fall out gradually1 month after initial treatment there will be noticeable reduction in hair growth in the treated area3 months after initial treatment you can enjoy the freedom and can use the system for occasional touch-ups if necessary How does the iLIGHT Pro Plus Quartz Work:The iLIGHT Pro Plus applies a special pulse of light energy to the skin.The melanin within the hair shaft and follicle absorbs the light, converting it to heat.The heat targets the root, disabling the hair’s growth mechanism, and within 1-2 weeks, treated hairs start to fall out. Specifications:Spot Size – 2cmSpeed – 2.25 secTechnology – Xenon Flash LampElectrical Requirements – 120VACTime between the flashes is about 2 seconds *Use and Care Guide, Instructional DVD, and electrical cord are all included * I am a level one skin tone with darker brown hair and I used this on my lower legs only, as my upper legs were blonder and it wouldn’t have worked. I haven’t had to shave my legs ever again, it really is freedom as they advertise.