5 different energy levels that provide users to choose according to their skin tone and hair colour to ensure the light intensity. Start from level 1 for the first time to get used to the device flashes before increasing to a higher level. In Single Flash mode, every flash needs to press the button once, and the LCD display is flashing. The continuous mode will automatically flash after every 3 seconds to the skin as long as the lamp head is close to the skin.
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