Review on 👀 Anti Blue Light Anti Glare Screen Protector for 21.5-inch iMac Retina 4k Display | Reduces Eye Strain for Better Sleep | Compatible with iMac 21 Models A1418 A1311 A1224 by Mary Alvarado

I've tried several different brands but they always came with a crease in the middle of the plastic wrap. This arrived flat and works great. Just take your time to fully clean the glass. I had to use a razor to get the small bits of dirt off the glass before doing the final cleaning. When you get an airstrike, just lift it up and use the sticker to clear the debris from the plastic. If you take your time, you can make it perfect. It also helps if you wear it in a place where there isn't a lot of dust. I sit in front of the computer about 9-10 hours a day and edit photos. The cleaning takes place immediately. Less glare as the sun shines through the window during the day. The colors look the same to me. Slightly darker, but easily adjustable via monitor brightness. I used to have to wear blue light goggles but now I don't use them anymore and don't have to put them on and take them off.