Every day before each sleep you should empty the water out and refill the tank with fresh cold tap water.
Maintaining your Glow Dreaming is simple and easy to do. You should clean the device once a week, following this process:
Empty your Glow Dreaming out and fill it with warm/hot water from the tap and add about half a cup of white vinegar.
Let it sit for 30mins, then empty and dry out with a soft cloth or paper towel. (Just be careful of the sensor in the middle of the base).
You can also wash the lid(s) but be careful of the smaller inner lid as this is held in by a pronged piece of plastic that is fragile. (You can remove the inner lid by being very careful but it is not necessary) Wash the lid(s) with warm soapy water and let them air dry.
You can use other oils in the Glow as long as they are 100% organic essential oil and not synthetic as these types of oils can damage the unit.