The herbarium of flowers In the air, the scent of rose bushes brimming with flowers. The car diffuser continues the story of Rose, the emblematic fragrance of the Diptyque herbarium.Trip after trip, its fresh, flowery notes unfold, continuing the perfumed experience as you travel.   DIRECTIONS FOR USE The diffuser's adjustable metal grill allows you to control the intensity of fragrance in the car. The diffusion stops just as instantly as it started, leaving no trail, allowing you to choose and change scents as you wish. The cartridges can be kept for up to 3 months after opening, provided the container is properly closed after use. Lifespan of 40 hours continuously, ie up to 80 diffusion cycles (1 cycle corresponding to 1 hour).  CHARACTERISTICS The diffuser's adjustable metal grill allows you to control the intensity of fragrance in the car. The diffusion stops just as instantly as it started, leaving no trail, allowing you to choose and change scents as you wish. 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 2.9"; width 2.3" Made in France.