LumaRx delivers light energy at a wavelength that reaches hair at the root with an energy level spread across a long pulse length--making it one of the most effective at-home hair removal devices. For those who want professional-grade IPL treatments for long-lasting hair reduction. Men and women can use on body hair, such as underarms, bikini line, arms, legs, chest and stomach; but only on female facial hair on the cheeks, sideburns, chin, neck areas, and above the lips. Use on light to medium skin tones--best on dark hair. Time varies based on the size of the area being treated, but you can treat small areas in less than two minutes and large areas, such as a full leg, in about 20 minutes.