Does the UV protection in sunglassess have a expiration date?

[Schuyler Falls]

I have a pair of sunglasses for quite many years and I wonder if the UV protection in them can wear out.

[Schuyler Lake]

It doesn't have an expiration date.Unlike other things you get from the supermarket, you can't see a quality guarantee period printed on the package. You can use it as long as it is not broken or scratched.

[Schuylerville]

If the sunglasses have a good UV protection, then it will be valid until your sunglasses is broken or be damaged. If the quality of UV protection is not so good, it may lose its effect with prolonged use.