Which technique involves teasing or ratting hair?

The technique that involves teasing or ratting hair is back combing. This method is commonly used to add volume and texture to the hair. It is performed by taking a section of hair and combing it towards the scalp with a fine-tooth comb or a teasing brush, which creates a fluffy and fuller appearance. This process interlaces the strands and creates knots, giving the hair body and height, which is particularly useful in various hairstyles, such as updos and voluminous styles.

In contrast, pin curling is a technique where curls are set and shaped using pins, while set curling involves wrapping hair around curlers or rods to create defined curls. Braiding is the interlacing of strands of hair but does not involve teasing or creating volume.