Yes. Most cosmetics have a limited shelf life. Manufacturers are not required by law to print expiration dates on cosmetic labels or packaging. According to the FDA, expiration dates are simply "rules of thumb," and also depend on proper use and storage. If a product's appearance, scent, color or texture just doesn't seem "right," or if it has been exposed to high temperatures or multiple users it is probably a good candidate for the trash bin. Eye cosmetics and "all natural" products have a more limited shelf life. Some industry experts recommend replacing mascara three months after purchase.