Final answer:
Soft pin curls are large diameter pin curls that are similar to a roller but do not have the same amount of tension. They are commonly used in cosmetology to create loose, voluminous curls.
Step-by-step explanation:
Large diameter pin curls that are similar to a roller but do not have the same amount of tension are called soft pin curls. They are commonly used in cosmetology to create loose, voluminous curls. Unlike traditional pin curls, which require a lot of tension and skill to create, soft pin curls are more relaxed and easier to achieve.