How long should you keep nail polish before throwing it out?

I found some polish on a shelf of miscellaneous bathroom items in my linen closet. I know I've had it for a while, I'm not sure how long, but should I use it? A couple bottles are newer and barely used and I like the color, I'd hate to throw them out. I have had a past experience with old nail polish remover about a year ago, as I don't get all girly all the time. The old polish remover literally ate the skin off of my fingertips, had to go to the ER, and be bandaged up for about 1-1 1/2 weeks until they healed on top of using a cream for it. Wasn't good at all, and still don't have feeling in my fingertips the way I used too. I do, just not as great as before. I don't want nail polish to maybe do the same thing. So is it safe to use or should I just toss them to be safe, than sorry?How long should you keep nail polish before throwing it out?
Nail polish usually only gets thicker with age, and the pigment becomes more difficult to redistribute evenly into the base. Try shaking it to see if the polish goes smoothly back into solution, and try applying a coat on one nail to see how thick it is. If it doesn't mix, or it's too thick, toss it.How long should you keep nail polish before throwing it out?
Nail polish remover is ';acetone';---a dangerous liquid that can do just what it did to your fingers. So when it heals, keep the nails shiny and trimmed---but NO polish. You obviously cannot tolerate the remover so don't do any decorating--the polish chips and looks crummy after a day or two. Avoid any further risky experiments with these items. Natural nails that are trimmed and well kept are very attractive.
i think it would be fine to use them you just should shake it then test it on a piece of paper or something to see if the color is still good and to make your nail polish last longer you can put them in the fridge.

cover girl