What it is: A fragrance diffuser insert of the light & citrusy Fleur d'Oranger (Orange Blossom) scent-compatible with Diptyque home, wall and car diffuser systems.Fragrance story: This diffuser cartridge fragrance is a deliciously tart and lightly spicy ode to the orange tree. The cartridges contain pearls highly concentrated in perfume, faithfully reproducing each note of the fragrance. How to use: The cartridges can be kept for up to 3 months after opening, provided the container is properly closed after use.They have a lifespan of 40 hours continuously or up to 80 diffusion cycles (1 cycle corresponding to 1 hour). Cartridge only. Electric diffuser and car diffuser not included. Provides 40 hours of fragrance