Why my glasses tint disappeared?

[Finley]

I have worn the tinted glasses for a long time. Recently the tint suddenly get disappeared.I don't know how they disappear. Do you know why?

[Justice]

Tint glasses with good quality can't disappear automatically.Unless it has touched the corrosive liquid like alcohol, it won't fade away itself. You can take them to your optician and let them check out and explain it to you.

[Douglas]

Do you get your tinted glasses from some cheap store which may sell tint glasses with low quality so that the tint can fade away with time going on.