What is the primary benefit of blow-drying hair after a haircut?

Blow-drying hair after a haircut serves multiple purposes, but the primary benefit is to add volume and shape. When hair is damp, it tends to fall flat and may not reflect the desired haircut style. Blow-drying helps to manipulate and style the hair, allowing the barber to enhance the cut's shape and add volume by lifting the roots. This technique also helps in creating movement and fullness, making the haircut look more polished and professional.

While there are other potential advantages to blow-drying, such as removing excess moisture or preparing hair for coloring, the primary focus following a haircut is to achieve an aesthetically pleasing volume and shape that showcases the skill of the cut.