MASCARA: WHEN TO SAY GOODBYE! We all know that mascara can be a bit pricey, especially if you get it from a top of the line make-up department. Additionally, mascara can last a matter of months, even if we use it on a daily basis! However, there is some danger associated with using the same mascara for a long period of time. Generally, the rule of thumb for any opened bottle of mascara is to throw it out after three months. Bacteria can build up...