What does the size of the rod determine during the perming process?

The size of the rod during the perming process plays a crucial role in determining the texture of the curl. A smaller rod will create tighter, more defined curls, which can lead to a bouncier and more voluminous look. In contrast, a larger rod results in looser waves or a softer texture. This is because the diameter of the rod influences how much hair is wrapped around it and how it sets into a curl pattern once the perm solution is applied and neutralized.

While factors like duration of the perm, height of the curl, and volume of the hair may be relevant in the overall perming process, they are not directly influenced by the size of the rod in the same way that curl texture is. The size specifically alters the tightness or looseness of the curls formed, making it essential for stylists to choose the appropriate rod size to achieve the desired look for their clients.