A diffuser is like a humidifier to bring healing vapor or like a candle that you would use to bring good smells to your room. A diffuser is made especially to bring the vapor of an essential oil into a room. There is one diffuser we recommend to everyone to start.
Especially, if you’re on a tight budget, the GreenAir Spa Vapor Diffuser is great. You can get it usually for around $30 on Amazon. This one lasts 2 hours, but the vapor should continue to effectively fill up a medium sized room for 4 hours after it’s done. We have purchased one of these for each of the kids bedrooms. Most every night, we let them run. We change up the essential oils we add to them depending on the condition or need.