White cloth mousepads yellow. Accept it.

No, there’s no magic coating or spray that prevents it forever.

UV light breaks down the optical brighteners and fibers in white cloth. Sunlight through a window is plenty to turn that crisp white into a dingy yellow over a few months. It’s not a manufacturing defect—it’s physics.

You can slow it down by keeping the mousepad out of direct sun. Roll it up and store it in a drawer when not in use. Some people swear by UV-blocking fabric sprays (like for outdoor cushions), but they’ll change the feel of the surface and still won’t stop it entirely.

Honestly, if the yellowing bothers you, just buy a new one. It’s a $10 mousepad, not an heirloom. Or get a darker color next time and skip the headache.