This device is not intended for use by children or those with reduced sensory or mental capabilities. In general, we recommend that you keep the device out of the reach of children. In addition to charging, be sure to unplug the power cord immediately after use. Should be cleaned without charging, do not get the adapter wet. How to use it: Step 1: Shave off the hair and dry the skin. Use a medical alcohol wipe to clean the flash window. Step 2: Insert the IPL hair removal system and press the power button to turn it on. Step 3: Wear protective goggles to protect your eyes. Step 4: Select the desired energy level, single flash mode or slide mode. Step 5: Place the flash window vertically and securely on the skin where you want to remove excess hair. Note: Please read the product manual carefully before use.