If you’re rationing your favorite lipstick or face cream to make it last as long as humanly possible, we get you — but we also have some bad news to share. Just like the milk or eggs in your refrigerator, beauty products have expiration dates. And when those expiration dates have passed, they should be tossed or recycled accordingly. You might be thinking, “But does it really matter if I keep using them?” The answer is yes.