[Working Principle] The IPL hair removal system uses the strong pulsed light absorbed by melanin in the hair follicle to produce a photothermal effect, which quickly increases the temperature of melanin and breaks it down.[2 DIFFERENT MODES] Manual mode (flash mode) is mainly used for hair removal of small areas, such as bikini line, armpits and lips; automatic mode (sliding mode) can be used for large hair removal areas, such as legs, abdomen and back.[Applicable skin and hair color] Like all hair removal, the intense pulsed light hair removal system is not effective for blonde, red or gray hair. In addition, this product is not suitable for dark or black skin.[5 energy level] Adjustable from 1 (lowest) to 5 (highest), please select the level according to your needs. The higher the level, the higher the resistance, the better the depilatory effect (for the first use, level 1 is recommended).