Review on COOSKIN Laptop Anti Blue Light Tempered Glass Screen Protector -Eye Protection Blue Light Blocking Anti Scratch HD Screen Filter (13 Inch) by Jon Johnson

At first I was a little skeptical when I received this product because the packaging didn't say "anti-blue light" and it was clear compared to others that Blue Lightweight screen protectors I've bought had a blue cast to them. I decided to test if this works by using black light which has more blue light than your computer screen. In the first shot, black light shines on white paper with no protective film and you can see how blue it looks. I then took the black light and placed it on the screen protector and then directed the light onto a piece of white paper. In the second image you can see that the color changes from blue to purple. For me, this satisfies my test to see if it can block blue. It doesn't look like 100% blocking but I also tested it with the blue tinted protectors I had and I have to say that these protected much better. In general I am satisfied