Most girls with an extensive collection of nail polishes tend to keep them past the expiration date. The date on the bottle isn’t the only indicator that your favorite nail polish reached the end of its lifespan. If you’re dealing with any of these issues, it’s time to buy a brand new bottle.
The thickness of the nail polish is a good indicator of its quality. If you notice it’s not blending easily, even after you shake or roll the bottle between your hands, it’s time to let go.
Properly screwing the cap can prolong the life of your nail polish, but if you notice it’s drying out and looking crumbly you probably didn’t do it right.
Most of us own more bottles of nail polish than we actually need, and there’s nothing bad about getting rid of them. They’re not extremely expensive, and there’s no need to keep the ones you’re not using if you don’t like them or already have others in the same shade.