It's difficult to name what every person's favorite beauty product is with total certainty. But, if we had to guess, we'd put concealer at the top of the list. Some will argue that we should rely on our skin care to keep our faces fresh, but let's be real: Sometimes we're left with bags under our eyes after a late-night marathon of Succession. And let's not forget about the random pimples that pop up on our noses, courtesy of stress or good ol' hormones . That's when we usually rely on cover-up to save the day.