The herbarium of flowers From these fine pearls emerge the fresh, floral notes of a ruse bush brimming with flowers. The Rose insert celebrates this emblem of perfumery. Slipped into the "Un Air de Diptyque" home fragrance diffuser or the car diffuser, it perfumes the air with its fragrance. DIRECTIONS FOR USE The cartridges can be used with electric home diffusers and car diffusers. Please refer to each diffuser system’s product information sheet for directions for use. CHARACTERISTICS The cartridges can be kept for up to 3 months after opening, provided the bag is properly sealed after use. Product keeps for 18 months in the airtight bag after opening. 40 hours of continuous life. Size: approx. height 2.7"; width 2.2" Made in France.