How to use: Remove the cartridge from its pouch and slide it into the car scent diffuser.Depending on the thickness of the vehicle's ventilation shutters, there are two options for opening the fixing clip, wide or narrow. To choose one of them, unscrew the ring on the back of the diffuser, pull on the fixing clip, rotate it 90° and screw it back on.Depending on the vehicle's ventilation grid, attach the diffuser vertically or horizontally. Turn on the fan so that the airflow passes through the cartridge and releases the fragrance. If you would like a more intense fragrance, it is recommended to increase the fan level.To remove the cartridge, push it from the bottom of the diffuser with your finger. Serge Lutens recommends that you remove the cartridge from the diffuser after each use and put it back in the pouch so that it retains all its olfactory properties.Please read the user manual carefully so you can use your diffuser properly and safely. The car scent diffuser is compatible with the majority of vehicle air vents, under certain conditions.Made in France