The Dolphin Clinic Car Diffuser helps enhance the air as you drive! Simply add a few drops of your chosen essential oil(s) to the reusable pads, close the catch, attach to any car vent and enjoy the therapeutic aroma! Great to deodorise your car and nice way to relax and unwind while driving,  Some suggested oils for your car are,   - For pets in the car- try Dolphin Clinic Lemongrass  - To help help relax on a stressful drive – try Dolphin Clinic Sheer Bliss, Stress Less or Lavender  - If you or your kids suffer from travel sickness  - Dolphin Clinic Peppermint  - Have a cold - Use Dolphin Clinic Decongestant The Dolphin Clinic Car Diffuser is a great way to avoid artificial car “freshener” chemicals in your car