Cosmetics are not regular industrial products. Like food, they are perishable with the expiration date. Moreover they are directly applied to your naked skin and even stay there for a quite some time. D o you want to drink the orange juice fresh out of a squeezing machine today or the one stored in the refrigerator over several months? You don’t even need 1 second to figure out the right answer. Cosmetics are more sensitive to heat and light than you think. The longer time a cosmetic product stays around after production, the more likely it gets exposed to the wrong environments. Who knows what happens during the long storage time? When you buy a cosmetic product with the tight expiration date and feel the smell is somewhat strange, there is a chance that your product could go bad already.