This skull diffuser is the perfect addition to your car! It does not come assembled to prevent spilling during shipping. We do include instructions on assembly! This is a car air freshener made from organic ingredients! Make your car smell absolutely AMAZING with our car air fresheners! They last for an extended period (approximately 1–3 months) and are reusable. Disclaimer: Our products contain fragrance oil, which may cause stains and/or damage to the interior if not used properly. DO NOT oversaturate the wooden cap, and clean up any spills immediately to prevent damage. For added precaution, you can reinsert the plastic stopper after saturating the wooden top. Our vehicle accessories are not designed to withstand high temperatures. If you live in a region with extreme heat, we recommend waiting until temperatures drop below 85°F before using the product. Meltdown market is not liable for any damages caused by improper use. Do not ingest. If swallowed, seek medical attention immediately. If the oil comes into contact with the skin, wash thoroughly with soap and water.