Why do transparent phone cases turn yellow after a while?

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Note that this happens even if the phone rarely exposed to the sun light

In: Chemistry

3 Answers

Anonymous 0 Comments

The transparent phone cases are often made of polyurethane. When exposed to UV light, polyurethane can degrade and become oxidized, turning into yellow-ish compounds called quinones.

Anonymous 0 Comments

Just like the sun’s UV rays damage our skin and turn it red, they make plastic polymers yellow through cell damage

Anonymous 0 Comments

You’re washing your hands after you pee, right? Right?!