What does the term 'stem' refer to in a pin curl?

In the context of pin curls, the term 'stem' specifically refers to the section between the base of the curl and the first arc of the circle. This is a crucial component of pin curling because it determines how much movement the curl will have and influences the overall shape and style of the hairstyle. The length and tension of the stem can significantly affect the curl's final appearance—whether it is tight, loose, or creates a particular wave pattern.

Understanding this definition allows a stylist to manipulate curls effectively, ensuring that they achieve the desired volume and style in their client's hair. A well-defined stem can also contribute to a more polished look, while improper handling might result in curls that do not hold or that look uneven. Thus, mastering the concepts of curl structure, including the roles of base and stem, is essential in cosmetology.