There are many types of rollers, both heated and non-heated, which can make the search for the right tool all the more confusing. They vary in both length and width — a wide diameter gives a full, smooth curl, while a thin roller gives a tight, spiral-type curl. Even the technique differs from one set of rollers to the next, with some being more effective on wet hair and others dry.

Here's a handy guide to help narrow it down.

Magnetic rollers ...

... add smooth curls and volume. Because they are used to set wet hair, they offer long-lasting curl.

Velcro rollers ...

... provide soft curls and full body and can be used on either damp or dry hair. These are good choices for short or fine hair and hair that breaks easily, since they don't need to be clipped in place. However, if your hair is long or thick, you might need to use clips to keep Velcro rollers in place.