Which procedure is performed to create body and volume in hair?

Perming is the procedure specifically designed to create body and volume in hair. This technique involves using chemicals to break down and reform the bonds in the hair's structure, allowing for loops or curls to be set in the hair. When hair is permed, it achieves a curly or wavy texture, which enhances its volume and body. This adds fullness and can provide a new dimension to the hair, making it appear thicker and more lively.

While blow drying can also add some temporary volume, it does not fundamentally change the hair structure or give it lasting curls or waves like perming does. Straightening, on the other hand, is aimed at reducing curliness and frizz, ultimately leaving hair looking sleeker and smoother, which usually decreases volume. Hair coloring focuses on changing the hair's color but does not affect its texture or volume in a significant way. Therefore, perming stands out as the technique explicitly intended to enhance volume and create body in hair.