In my case, It has two major limitations1. It reduces the brightness of the screen and I have to increase the brighness.2. In case a user increases the brightness then due to the heat produced by the screen this protector produces a white dust kind of material which is very much visible on the screen.I don't want to ruin my 3K MacBook and I'd be returning this item. Upon searching the comments I've found that an another user is also facing the issue related to the dust.Seller/Producer take this feedback seriously please
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