Will clear frame glasses yellow?

Clear frames glasses will yellow after long-term wear.

The yellowing of the transparent eyeglass frame is the oxidation of the transparent frame and air.

UV light on clear glasses can also turn the frames yellow. 

Adding some material to clear frames can delay yellowing, but not eliminate it.

If clear glasses turn yellow, they can be cleaned with alcohol. 

You can apply some alcohol to the yellowed part of the eyeglass frame.

Then place the eyeglass frame in a ventilated place to dry.

Finally dry the residual moisture on the eyeglasses with a glasses cloth.