Just like your wardrobe, your pantry and your desk, your makeup bag needs to get a little spring-cleaning makeover as well. And while all makeup is different, some brands might last longer than others, and some products have a longer shelf life than others, as a rule of thumb, if you opened your makeup and you haven’t used it in while, it’s destined for the garbage, not your face. Here’s what you need to know if you’ve ever asked, how long does makeup last?