Dirt accumulate to the point that face recognition wont work so it is not here to stay until it wears off by use but you have to remove it to clean it make sure not a single piece of dirt squeezes in because it will get impossible to set the screen back without a plague of bubblesby the way it will happen thanks to friction magnetism love the black border around the whole sceeen does not affect the facial recognition at all i’ve had it for 3 weeks and i love it