From lipstick to mascara, find out exactly when you should be replacing your favorite cosmetic items.
The reason: The chemicals in nail polish will start to degrade after one year. Plus after a year the color may start to yellow and the polish has probably dried out and become thick and harder to apply after this amount of time. If you're nervous that you won't fnd your favorite color again, stock up on a few bottles and only open a new one when it's time to toss the old one.
Photo Credit: Getty Images/Steve Wisbauer