I have been using Aromatherapy for the past 15 years of my life. This is the very first product I've ever owned, and used that is based with electricity and water. Not only is it a cleaner burn (without the candle tea-light soot) and the machine changes color slowly emitting from the frosted white plastic making for a beautiful glow. There's also a setting to pick the color glow you want to keep going for as long as you want, completely being able to adjust your environment from scent to sight. I LOVE LOVE LOVE LOVE LOVE IT!