3 Best Thermal Brush Tested and Reviewed by Wired (2025)

Sutra’s infrared thermal styling brush has a design similar to the top pick Wavytalk, but instead of having two buttons, you can press one power button to turn it on and off, or toggle between five thermal settings. You can easily tap while using the button, but you won’t change the heat settings immediately. So, it’s not the worst case if you realize you’re pressing it by mistake. It reaches the highest heat levels of the thermal brushes I’ve tested and makes it a good option for unruly hair that requires higher heat to surround it.

Smoothing curly curly hair after air drying is a good job. I would prefer better control, but it has been working well for me for months. There is a 43mm option (approximately 1.7 inches), which is an oval size for the classic blowout look, but the Sutra is small and rounded. 32mm brush ($110) If that’s more of your style.