5 years. According to checking the information on Dior's official website, the shelf life of Dior perfume is 5 years. This period refers to the preservation period calculated from the date of production in the unopened state. Once opened, the shelf life of the perfume will be shortened accordingly. This is due to the fact that the ingredients in the perfume are more active and can easily react with the oxygen in the air, leading to changes in the fragrance. Therefore, the correct preservation and use of perfume is the key to maintaining its quality. Christian Dior (ChristianDior), referred to as Dior (Dior or CD), is a French fashion consumer brand belonging to the Mo?t-Hennessy-Louis Vuitton Group. Dior is mainly engaged in men's and women's handbags, women's clothing, men's and women's footwear, jewelry, perfume, cosmetics, children's clothing and other high-end consumer goods.