Roll-on deodorant is a type of personal care product designed to reduce body odor. It typically comes in a small bottle with a ball-shaped applicator at the tip. When the bottle is tilted, the ball rolls and dispenses a liquid formula onto the skin, usually under the arms. This method allows for easy and precise application. Most roll-on deodorants contain active ingredients that help neutralize odor-causing bacteria. They may also include fragrances to provide a pleasant scent. Unlike sprays, roll-ons are often less likely to irritate sensitive skin and can offer long-lasting protection throughout the day.