One of the best things about the Essence Nasal Diffuser is that it is reusable. Now we are making it easier to re scent your diffuser with this one-of-a-kind Pearl Soaking Bay. Simply rinse your used ring with mild soap and water, dry completely and place around the ring post inside the bay. Add 1-2 drops of 100% essential oil (as well as 1 drop carrier oil) and snap shut. The ring will reinfuse within 2-3 hours. The longer you allow it to re soak, the longer the scent will last on the ring. Pearl Soaking Bay includes soaking bay pod with one unscented ring inside. *Disclaimer: Use only 100% grade essential oils approved for internal use when reinfusing the ring. Always add at least 1 drop of carrier oil to avoid irritation.