A flat iron, also known as a hair straightener, is a hairstyling tool used to straighten and smooth hair. Flat irons come in a variety of sizes and materials, but the best flat iron for black hair is one that is made of ceramic or tourmaline and has adjustable heat settings.
Ceramic and tourmaline flat irons are gentler on hair than metal flat irons, and they help to seal in moisture and prevent damage. Adjustable heat settings allow you to customize the heat to your hair type and texture, which helps to prevent over-styling and damage.