* 6 Pieces essential oil refill pads with blister packaging. * Replace the essential oil pad after extended use (about 20 uses) or if you want to change the essential oil. * Remove the essential oil pad with the help of small pointed object (tip of a pen), to do this, insert the tip into one of the holes in the support disc. Clean inside the compartment with the help of a cotton bud. * Insert a new essential oil pad and add 3 to 5 drops of essential oil.