Deep Hydration Nano Ultrasonic technology splits water molecules into tiny nanometer particles to make the effective component penetrate into the depth of skin by atomization processing to moisturize your skin and help your skin pleasantly cool. It can sooth away the mild pain or itching that caused by overexposure from sunshine, help your skin recover to the normal situation. USB Rechargeable:Adopts USB charger which can connect to computer, power bank or power adaptor for charging. 2~3 hours for fully charged. No need for batteries and can use about 50 times after fully charged. Indicator Light:When the indicator light shows blue, the Nano Mist Sprayer is in use. When shows red, the Nano Mist Sprayer is charging. The indicator light will go out automatically after full of electricity. How to use 1.Open the bottle cap with counterclockwise 2.Fill cold boiled water or minerals water 3.Covered the bottle cap with clockwise 4.Turn on the spray from top to bottomInstrument maintenance After use, please clean the instrument in time to prevent grease and other dirt precipitation. Clean a product surface with a soft damp cloth and dry it.Never use essential oils, gasoline or corrosive detergent to clean the plastic material part of spray. Please do not place the product in high temperature and damp environment, so as not to influence use effect.Instruments are not used for long time. Please clean the tank and put it in a cool and dry place. Strictly prohibited to use when Charging . Charging time is strictly prohibited for more than 12 hours.