2. Toss Your Mascara Every 3 Months

This’s the makeup expiration rule that most of you are probably aware of. It’s the one you hear the most about. If you’re a mascara queen like I am then this’s one you never have to worry about because a tube of mascara won’t last that long. But if you go a little lighter on mascara then be sure to toss it every 3 months. And anytime you have an eye infection such as pink eye, it needs to go immediately.