Final answer:
Velcro rollers can be used on both wet and dry hair to achieve different results.
Step-by-step explanation:
Velcro rollers are not exclusively used on wet hair. They can be used on both wet and dry hair, depending on the desired result. When used on wet hair, velcro rollers can help create a bouncy and natural wave. On the other hand, when used on dry hair, they can be used to add volume and body to the hair.