*??Feature: *??High Strength whitening gel *??Use anywhere-fast and convenient application. *??Easily brush on for a bright smile. *??PH neutral.  Safe to use. *??Type:  Tooth brightening pen  *??Quantity: 1 Bottle *??Net Content: 5ML *??Usage:...

Operations: 1.Loose and take water tank by turning counterclockwise.Fill the tank with appropriate amount of pure water by using the measuring cup.Put back the tank and rotate it clockwise to fasten it tightly. 2.Put the plug of the humidifier...