What it is: A fragrance diffuser insert of the woody Ambre (Amber) scent—compatible with Diptyque home and car diffuser systems.Fragrance story: The diffuser cartridge has the heady fragrance of balms and spices, of precious and enveloping woods of amber spheres. These cartridges contain pearls highly concentrated in perfume, faithfully reproducing each note of the fragrances. How to use: The cartridge can be kept for up to 3 months after opening, provided the container is properly closed after use. It has a lifespan of 40 hours continuously or up to 80 diffusion cycles (1 cycle corresponding to 1 hour). Fragrance cartridge only; diffuser sold separately