?If you are not satisfied with your purchase, please contact us, our friendly customer service team will be ready to help you please rest assured that the purchase. ?OLEOPHOBIC COATING - industry leading highly hardness with MUBUY INC oil layer separation technology, it will separates oil, sweat, and water on daily use, you can just wiping it with a clean cloth to make it as clean as new. ?ANTI GLARE ANTI STRONG LIGHT REFLECTION -unlike other glass or film cover, our anti blue light screen protector coming with anti glare matte coating, effectively reduce the visual interference caused by strong light from the screen while in a high light conditions. ?RELIEVE EYE FATIGUE AND HELP YOUR SLEEVE BETTER- genius 8-layer design, our eyes protection anti blue light screen protector 100% Block Hazardous UV light and effectively block the most hazardous HEV blue light of 380-495nm and Electromagnetic radiation, help you block electronic hazards. ?WHO NEEDS MORE A BLUE LIGHT FILTER-insomniac, students, office staff, game lovers, fashion beauty, pregnant women, elderly, filter out Blue Light and relieve computer eye strain to help you sleep better.