In hair services, what does "blow drying" refer to?

Blow drying refers specifically to the technique where air flow, often combined with heat, is used to dry and style hair simultaneously. This process utilizes a blow dryer to evaporate moisture in the hair while shaping it into the desired style. The heat and airflow work together to help smooth the hair, create volume, and achieve a finished look. This technique is particularly popular because it allows for versatility in styling, enabling various effects such as straightening, curling, or adding bounce to the hair.

In contrast to blow drying, shampooing hair solely involves cleaning the hair and scalp without addressing styling or moisture removal. Applying heat to set curls is a different technique focused on creating specific hairstyles using curling methods rather than drying the hair. Lastly, using a flat iron is a method of straightening, which also does not encompass the dual function of drying and styling involved in blow drying. Hence, the primary purpose of blow drying is accurately encapsulated by the first option, making it the correct choice.