Colgate Floss-Tip Charcoal manual toothbrush is specially designed with 17x slimmer tip bristles (vs. end-rounded regular bristles) for a deep and gentle clean. The Floss-Tip bristles are specially designed for a deep and gentle clean to help sweep away food and plaque from along the gum line. Remember to change your toothbrush every 3 months. This toothbrush does not replace flossing.