Yes, how you use a close-tooth comb or hairbrush can lead to knotting, tangling, breakage and split ends. To repair damaged hair, switch to a wide-tooth comb immediately. Slowly brush along the length of your hair, from root to tip, working on small sections at a time. If you encounter serious knots or tangles, unravel them gently with your fingers before running your comb through them. After you have thoroughly done this, you can use a regular comb to neaten or style your hair.