Toothpaste has a shelf life. Normal ranges from one year to three years. Try to use the opened toothpaste within one to two months. Because the chemicals contained in it will react after storage for a certain period of time. In addition, toothpaste is classified, and the shelf life of toothpaste with different functions is different. Does toothpaste have a shelf life? The longer a tube of toothpaste is used for several years, the more chances it will be exposed to the air and bacteria, and the cleaning effect may become pathogenic. Generally, the shelf life of toothpaste is relatively long. The two main ingredients in toothpaste are different, and the shelf life is also different, which is generally 1-3 years. Functional toothpaste has different chemical components and shelf life, mainly calcification and caries prevention. The shelf life of fluoride toothpaste containing calcium will be slightly longer, and the shelf life of toothpaste chemical components such as bleaching, analgesia and hemostasis may be shorter.