UV Light :Anti-germ Rate 99.9%, It destroys the DNA structure of germ and other microorganisms to lose the ability to reproduce, and then destory germ and other microbes. No chemical residue in ultraviolet irradiation will not damage any materials.Keep more than 10s and 5cm above the surfaces of object,then it can clean the your items.
Safe to use: This UV light sterillization does not contain chemicals. A UV protection glasses are provided with the wand. You should wear it to avoid damage to your eyes. The wand gives perfect results when it is faced down on a surface.