There is a variable type diffuser on the market today. The first is a candle, while becoming a popular method that does not make sense for all situations due to release smoke into the air along with the aroma candles.
The Reed Diffuser
Another product known as reed essential oil diffuser. This brand uses a stick placed into a bottle filled with aromatherapy oils. A reed diffuser sticks absorb the oil and release into the air. While having the ability to last the longest of all the product diffuser, it is not effective in covering a wider area and therefore require more sticks.
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The Electric Diffuser
The most popular types of aromatherapy products are electric aromatherapy diffuser. By plugging into an outlet diffuser blows cool air flow in the pad or the oil column to remove the scent into the room.
There are also battery-operated aromatherapy diffusers to apply the same method to remove the oil. The effectiveness of this product is that it is spread over the entire room aroma is not just around the diffuser. The weakness of this type of diffuser is that a common oil container should be replaced because the fan will dry pad and continue to use more oil to produce steam.