Many people wonder about the life of their makeup. If you are anything like me you have a real expiration phobia (I don't know if that is really a 'thing' but for me it is.) I check expiration dates on EVERYTHING and won't go near things that are even coming close to expiration. So obviously my makeup products aren't any different. To find out when products expire is easy, most products have an expiration on the bottom, it will look like this: That number represents the amount of months you have, once you open the product, until it expires. In this case, 12 months. Unopened, well-formulated cosmetics can remain stable for a few years if kept at room temperature. But once air hits the formula, certain ingredients start to oxidize and degrade. If you can't find the expiration on your makeup products, here's an outline of when makeup should be tossed, once you open it. Face makeup: Six months for liquids, two years for powders. Mascara...