It is quicker and easier to curl your hair with a curling iron. Plus, a curling iron gives you more options for different types of curls and waves, and will never leave your hair with a crease or bump. However, a straightener – also known as a flat iron – can still give you great results and is a multi-purpose tool, so it's a good option if you are on a budget and want to be able to create both straight and curly styles.