Why choose our car essential oil diffsuer? 1. Personalization. You can add your favorite essential oils at will to create the scent you want in the car. You can even create your own scent by mix the essential oil, and then surprise all the friends who get in your car. For yourself, it can relieve your tension and stress in daily busy work, driving, long-distance travel, business trips. 2. Environmental protection. When the smell disappears, you just need to add essential oils, no need to discard the entire product and purchase again. 3. Tasteful. After moisturized by the essential oil, the wood will become darker. The aroma will also last longer and longer. As time goes by, It will look like a tasteful handicraft and will not be out of style. It is a perfect gift. Notice: 1. This product does not contain essential oils. 2. Size: 1.38x0.59 inch/35x15 mm 3. The essential oil diffuser has no fragrance, so whether the essential oil fragrance can last depends entirely on the quality of the essential oil. Generally, pure plant essential oils should be re-added in about 1 week. 4. When you buy essential oils, if you want to reduce the times of additions, you can pay attention to the fragrance holding time of essential oils or perfumes. Some essential oils will add other ingredients to extend the fragrance holding time. 5. The amount of essential oil dropping into the aromatherapy wood is up to you and the style of your essential oil, usually 3-5 drops are enough. It need drop slowly until essential oils absorbed by the diffuser, otherwise the essential oil will leak from the bottom.PACKAGE INCLUDING: 2PCS Rosewood Car Essential Oil Diffusers (A-Type)(This product does not contain essential oils). Notice: The wood car diffuser has no fragrance, so whether the essential oil fragrance can last depends entirely on the quality of the essential oil. GIVE IT SOME TIME: With time and care from essential oil, the natural rosewood will look better and the scents will also last longer and longer!!!!. DRIP YOUR ESSENTIAL OIL ON THE TOP: No need to Loosen the cover. Just drip 4 drops of your favorite essential oil on top of the wood and wait for the essential oil to be absorbed, then clip it on the exhaust hole of car air conditioner by the vent clip. Then you will smell the scent of your favorite essential oil in the car. Because of made of wood, when you want to tighten the lid, please do not be too hard. ROSEWOOD & LAVA STONE: The car diffusers are made of high quality natural rosewood, volcanic lava stone, creating all natural appealing, each wood pattern is unique from natural. It looks very upscale and cute, which can be a small gift.The car air diffuser wood has 6 holes at the bottom and 5 volcanic rocks in the locket. These design make it easier to store and absorb essential oils, eco-friendly and safe. ENJOY THE SMELL YOU LIKE: You can use your own nice-smelling essential oils drops into the car essential oils diffuser. Then you will get the comfortable car interior space which is full of your favorite scent!!.