Antiperspirant is a subclass of deodorant whose primary role is to prevent sweat itself; it accomplishes its goal by blocking sweat glands. The sell by date is not necessarily an expiration date. We all have our favorites and cant live without them. But to be on the safe side, you should probably Still, the safest way to go about it is to replace your deodorant every six months to avoid any types of skin-related complications. There's no right or wrong, we just recommend washing your hair as often as you feel you need to. Keep the lid on it when youre not using it. We recommend that you check with your physician as to whether use of grain derivatives in personal care products will cause the symptoms of Celiac-Sprue Disease. Does Dove use plastic microbeads in their exfoliating products? Don't worry though, we're always working on new and improved formulas and we're 99% sure you'll find a new favourite. For everything else, store at room temperature and use within three years of the product's manufacturing date to enjoy their best performance. The active ingredient may not work anymore but it wont hurt you. At Christmas and the end of the dance year we have a pot-luck dinner prior to dancing. But opting out of some of these cookies may affect your browsing experience. If you live in a hot place, then you might want to give your deodorant a good stir before every use or keep it in the freezer. These cookies track visitors across websites and collect information to provide customized ads. And trust us, you don't nobody wants bacterial growth in their skin products.