Professional flat iron models include the Sedu Revolution Diamond Styling Iron, Sedu Pro Ionic Tourmaline Flat Iron, GHD Gold Professional Styler, Solia Tourmaline Ceramic Flat Iron, Babylisspro Nano Titanium Ultra-Thin Straightening Iron and the HAI Elite Nano XT Flat Iron. Other professional models include the Sedu Revolution Tourmaline Ionic Styling Iron, the Solano Sleek Heat 450 Flat Iron, Sultra Seductress and Chi Air Classic Tourmaline Ceramic Flat Iron.
These hair straighteners are all professional grade, but vary in price and features. Some, like the Sedu Revolution Diamond, HAI Elite Nano, Sedu Revolution Tourmaline and Chi Air Classic have small, one-inch plates. The Sedu Revolution Diamond has a heat setting between 180 and 450 degrees Fahrenheit. It comes with a 2-year warranty and automatically shuts off when not in use.
The HAI Elite Nano has a digital temperature readout, and turns off after 30 minutes of inactivity. It has a unique technology that enables plates to adjust to different types of hair. The Chi Air Classic heats quickly and eliminates frizz, say authors at Folica.com.
Irons come with additional plate sizes, which range from 1 1/4 to over 2 inches. Regardless of size, most irons heat to 450 degrees Fahrenheit, with the exception of the Sedu Pro Ionic, which reaches 400 degrees. They vary in price from just under $100 to over $200 as of 2015.