Final answer:
The volume-base thermal curl technique in question refers to a hairstyling method where hair is held at a 135-degree angle and rolled, typically placed near the top of the head to create volume.
Step-by-step explanation:
The question relates to the technique used for applying a volume-base thermal curl, which is a hairstyling method. In this context, the volume-base thermal curl is held at a 135-degree angle, which means the hair is lifted to a high elevation or angle from the head, creating volume at the base when the curl is set. The usual manner of rolling would involve winding the hair around a curling tool, such as a thermal curling iron, which has been heated, thus the term 'thermal'. As the hair is cooled, it would take on the shape of the curl. The placement of the curl is typically near the top of the head to maximize the volumizing effect.
In hairstyling, other methods such as chemical perms also exist, where hair is similarly wound around forms but the shape is set using a chemical reaction rather than heat. Understanding the angle at which hair is rolled and the position of the set is key to achieving the desired hairstyle outcome.