The NOW Solutions Ultrasonic USB Diffuser is a small 70 ml aromatherapy unit that runs off a USB cable, so it works from a laptop, power bank or wall adapter. It makes mist with high-frequency ultrasonic vibrations instead of heat, which keeps essential oils intact, and runs up to 4 hours with continuous or on/off operation. Three LED colors (red, green, blue) double as a soft night light, and it covers roughly 200 square feet. It suits desk workers, travelers and anyone who wants a compact diffuser without a wall outlet nearby; larger plug-in diffusers hold more water and run longer, but this one is easier to move around.
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With 18 ratings averaging 4.3 out of 5, buyers generally like the compact USB design and the colored light. Complaints center on the small tank and modest mist output.
The NOW Solutions Ultrasonic USB Oil Diffuser is a portable essential oil diffuser that plugs into a laptop or other USB port with a USB cable. The body is BPA-free.
It uses high-frequency ultrasonic vibrations to create an ultra-fine mist. This method uses no heat, which keeps the essential oils intact. The steam is cool, so there is no risk of burns.
To use it, add tap water and essential oils. It runs quietly, is easy to clean and shuts off automatically. Three LED lights in red, green and blue rotate through their colors. Keep it away from children and pets.
