I'm a fan of candles and wax melts, but I have a curious toddler and decided a diffuser would be best for the winter because it gets stuffy, the air dry and it works with oils. This is phenomenal! I love the tear drop effect, the light is bright enough to used as a night light, and it's easy to clean. I can fill it to about 250ml which is 50ml over the "maximum" and it works perfectly fine. I use about 6-12 drops depending on the scent I'm using or if I'm blending multiple oils. Love this and plan to get more in different colors.