Final answer:
Pin curl slices are a technique used in hairdressing to create shaping and form in a hairstyle. They involve wrapping a slice of hair around a pin curl without lifting it from the head. This technique can be used to create a perm hairstyle.
Step-by-step explanation:
Pin curl slices are a technique used in hairdressing that involves taking a slice of hair and wrapping it around a pin curl without lifting the hair from the head. This technique is commonly used to create shaping and form in a hairstyle. Pin curl slices are usually set in place with clips or bobby pins and can be left in the hair for a period of time to create a permanent hairstyle, known as a perm.