The Bio Ionic took my medium-textured, wavy-curly hair from wet to straight and dry in less than 30 minutes. In general, I struggle to get my hair straight using only a dryer, which is why I always follow up with a flat iron, but that step wasn’t needed with the Bio Ionic. It is certainly an investment, but for that kind of quality, the price tag is worth it. If you only want to zap excess moisture to avoid sleeping on or leaving the house with wet hair, this dryer can do that in less than five minutes. Yes, it’s that powerful. Don’t just take my word for it, though: When our lab experts tested the dryers’ strength by balancing ping-pong balls above each nozzle and turning on the highest airflow options, the Bio Ionic surpassed most other dryers, with only one out-blowing it. During my tests, I mostly used the high setting, which is the most powerful option, but the low setting shouldn’t be written off, as it is quite mighty compared to the lower settings on other dryers.
The Bio Ionic, which is among the lightest weight of all of the dryers at 0.8 pounds (only one is lighter), is incredibly intuitive to use, and I say that as someone who has been using the same hair dryer for the last five years. The ‘off’ setting is at the bottom of the toggle switch—rather than the middle, like on other dryers—so you go from off to low to high, rather than low to off to high. It’s a small but meaningful detail that kept me from accidentally switching to another speed when I really just wanted to turn the dryer off quickly mid-drying session to section my hair.
In addition to the two power settings, the dryer has three heat settings (high, medium, and cool) one “cool down” button, and two nozzle accessories to help control airflow. In my tests, medium was my preferred setting and plenty hot enough to style my hair.
One other small but important detail for me is that this dryer is not high-pitched in sound frequency. Other dryers left my ears ringing because of how they squealed throughout the blowout. This one has a low hum that’s just as loud as other dryers but significantly less bothersome in pitch.