Final answer:
The style called a Twist out involves unraveling twisted sections of hair to create a full and crimped effect, offering volume and definition to textured or curly hair.
Step-by-step explanation:
The style that involves unraveling the twist to add fullness and a crimped effect is known as a Twist out. This hairstyling technique is different from a Perm, which is a chemical process used to add curl or wave to the hair. A Twist out involves twisting sections of the hair, usually after washing, and then allowing them to set, typically by drying naturally or with the help of a hairdryer. Once the hair is completely dry, the twists are carefully unraveled, resulting in a full, crimped effect that provides volume to the hair. This hairstyle is commonly used on naturally textured or curly hair to define the curls and enhance the hair volume without using heat or chemicals.