The Dyson Supersonic hair dryer retails for $399.99. As one of the most expensive personal hair dryers on the market, we were eager to test it out. Follow Tech Insider: On Facebook More from Tech ...

Another reviewer shared similar sentiments. “I admit, this is a very expensive hair dryer. Is it worth it? Absolutely,” the customer wrote. “It’s amazing how it self-adjusts temperature.

We tested the best hair dryers to see which performed best on different hair types. We considered ease of use, range of temperature, and sound level of each.

Dryers that weigh less than one pound would be ... considering the fact that many diffusers on their own cost more than that. The dryer also has plenty of heat settings, high wattage, and a ...

At $295, this speed dryer costs almost five times more than the most expensive hair dryer I've ever purchased, but it also dries my hair five times faster, so I'd say that justifies the cost.

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