Using the apple pencil will eventually deteriorate the pencil tips, regardless of usage. It will stay longer unless it is used for art. Apple's website sells replacement Apple Pencil Tips.

After a lot of use, the PaperType will lose part of its roughness. The PaperType surface can become clogged with hand and skin oils, reducing friction. Clean your PaperType on a regular basis to extend its life and usability. This will decrease the collection of oils and particles while also restoring the product's rough, grainy feel.

Dishwashing soap and a damp cloth work well, as do alcohol-based wipes and a lens cleaning solution. Use a damp cloth and a drop of dish soap or a small bit of cleaning solution to clean your screen. - Wipe the entire screen with a second moist towel to remove any remaining soap or cleaning agent. Avoid immediately spraying liquid on your electronics as this could harm the item. Review Apple's recommended cleaning instructions for more details on how to clean Apple devices.

Does not blur or dim colors

Yes, it is removable. Leaves no residue after removal, just wipe the screen. Installation is very easy.

Does this privacy screen protector also reduce blue light emissions