New York State Cosmetology Practice Exam

The primary function of a blow dryer in hairstyling is to speed up the drying process and shape the hair. By using a blow dryer, stylists can remove excess moisture from the hair quickly, allowing for more efficient styling. Additionally, the focused airflow and varying heat settings enable stylists to mold and shape hair in specific ways, enhancing the desired hairstyle. This versatility makes the blow dryer an essential tool in a salon setting, as it not only dries hair but also influences the texture and volume of the final look.

Other choices reflect functions that blow dryers do not perform. For example, while hair may become less damp and feel lighter after drying, a blow dryer doesn't actually add moisture to the hair. Removing product buildup typically requires cleansing shampoo or other cleansing agents rather than styling tools. Finally, while coloring hair involves the use of products and techniques specifically suited for dyeing, a blow dryer is not designed for that purpose.