Georgia State Board Hair Design Practice Exam

The mobility of a pin curl is primarily determined by the stem. The stem is the section of the curl that provides the movement and flexibility of the curl. It is the part of the hair strand that connects the base (the area closest to the scalp) to the end (the tip of the hair), influencing how much the curl can shift and what shape and size it will take once completed.

By adjusting the length and tension of the stem, a hairstylist can control how much the curl can move; a longer, looser stem allows for more mobility and a softer curl, while a shorter, firmer stem tends to create a tighter curl with less movement. This makes the stem crucial in styling and achieving the desired look. The other parts, such as the base or end, do not contribute to the mobility in the same comprehensive way that the stem does.