As its name suggests, a root perm is a type of perm that focuses only on the roots of the hair. Consider this perm type if your hair is a little on the thin side and you want more volume at the roots. There are two types of root perms you can choose from, including the Korean root perm and a touch-up root perm. The touch-up is a maintenance technique that adds curls to your new growth after you’ve already had a full perm. With the Korean root perm, you or your stylist will go through the perming process while only applying rollers to your roots (the rest of your hair will remain unpermed). When you have a root perm, you won’t have to tease your hair, dry your hair upside down, or use any other technique to add volume to your roots.