Evaporative Diffusers

Evaporative diffusers use airflow to evaporate essential oils from an absorbent surface — a pad, filter, or wick.

How They Work

A fan blows air over an oil-soaked pad, carrying the evaporated molecules into the room. Passive evaporative diffusers (like clay pendants or reed diffusers) rely on natural air circulation.

Pros

• Silent (passive types)
• Portable and battery-operated options
• No water needed

Cons

• Lighter molecules evaporate first, changing the oil’s profile
• Less therapeutic impact than ultrasonic or nebulizer
• Limited room coverage