For those who want a step past subtle, a 1 3/4-inch curling iron will create a more noticeable wave than a 2-inch barrel.

What size curling iron is best for short hair? "For short hair, it's best to use a half-inch to a 1-inch curling iron," says Hurtado, "It's easier to maneuver and wrap the hair all the way around." ...

If you have longer, thicker hair, chances are you need a curling iron with a slightly bigger barrel like this 1.25-inch BaBylissPro Nano Titanium. This one comes recommended by Dorsey, who likes ...