First things first: The term “48-hour deodorant” should not be taken too literally. Even the manufacturers assume that you wash yourself once a day. Rather, behind the name is the security promise that the deodorant is guaranteed not to let you down all day. You should also know that deodorant is usually only used as a colloquial umbrella term for deodorant and antiperspirant. Two types of product that clearly differ in their mode of action.
A deodorant targets skin bacteria.