This device is designed to fill your car with pleasant odors, enhancing the driving and passenger experience. The product is made from aluminum which, unlike plastic, does not emit harmful substances when it comes into contact with oil. The lettering on the diffuser is laser etched to avoid even the slightest scent caused by conventional printing methods. The diffuser comes with three fragrance options, but it is also compatible with all fragrance oils, allowing motorists to choose and use their favorite scents with the diffuser.