Listing for a friend, the “The Home” purple tulip diffuser from Young Living. It works perfectly! The diffuser can be ran with or without the led light by holding in on the button to turn the light off. It will run continuously for about 3-4 hrs or until the water is used up in the reservoir. If you want the water to last a little longer, it can also run in 30 second intervals by tapping the button twice, the light will turn red and that indicates that it will run for 30 seconds on, 30 seconds off, 30 seconds on etc until the water runs out. There is a fill line inside the reservoir to show how much water to use when filling—just making sure to keep water out of the vent at the top side. I tried to remove whatever the residue is on the lid but you may be able to with a good soak. As you can see it is not noticeable when the top is on the diffuser. Great way to try out a diffuser at a fraction of the price new! I have lots of oils listed I will bundle!!