Final answer:
Cap highlighting is the highlighting technique that involves pulling clean strands of hair through a perforated cap.
Step-by-step explanation:
The highlighting technique that involves pulling clean strands of hair through a perforated cap is known as cap highlighting. Cap highlighting is a method commonly used in hair salons to achieve partial highlights. It involves placing a cap on the head and using a hook or needle to pull strands of hair through the tiny holes in the cap. The hair that is pulled through the cap is then lightened or colored to create highlights.