One of the best ways to achieve effortless waves? Learning how to curl hair with a flatiron. Of course, flatirons are known ...

Well, as it turns out, the only hair styling tool you really need to make sure is with you at all times is a flat iron. Why? A flat iron can both straighten and curl your hair, as long as you use ...

Larger barrels are better for longer hair, while those with short styles will ... more of the heat from the curling iron,” she says. Afterward, she pins the curls until they’ve cooled.