Final answer:
The technique of drying and styling hair in a single procedure is known as a blowout, which is distinct from perms that provide longer-lasting styles.
Step-by-step explanation:
The technique of drying and styling the hair in one operation is commonly referred to as a blowout. During a blowout, wet hair is styled using a hairdryer along with various brushes and tools to achieve the desired look. A blowout can both dry the hair and give it volume, shape, and style, and is different from perms or permanent hairstyles that use chemical or thermal means to change the hair's structure for a longer period. A perm, whether for curling or straightening, can last for several months, giving it the attribute 'permanent'. In a chemical perm, chemicals are applied to the hair, which is then set around forms to hold the new shape.