What can happen if rods are too large for the desired curl during a perm?

When rods are too large for the desired curl during a perm, the result will typically be a limp curl. This occurs because larger rods do not provide enough tension and shape to create a well-defined curl in finer or naturally straight hair. Instead of forming tight, bouncy curls, the hair may simply have soft waves or not hold any curl at all, leading to a lack of volume and movement.

The remaining choices reflect other issues that can arise during perms, but they are not directly linked to the size of the rods. Frizzy texture can occur from improper perming techniques or product use, uneven volume might be a result of uneven application, and overly tight curls are typically a result of using rods that are too small rather than too large.