Ran out of your favorite car diffuser? Our 1oz refill bottles give you around 3 refills for our signature hanging car diffuser. Another way to use these refills is to add your favorite scents to various diffuser apparatuses of your liking such as an electronic diffuser or a paper car diffuser. Simply add a couple of drops! Our refills come in 1oz/29mL clear glass dropper bottles. We are a low-waste company. If you'd like your products to be individually packaged in boxes, please make a request. This is subject to extra charges depending on order quantity.