Rexona's Classic 50mL powerful 48 hour compact size antiperspirant roll on provides long lasting protection against sweat and odour throughout the day. Our products are intelligently designed to work as hard as you do. We make it our business to know more about sweat, and what we learn informs every product innovation. Sweat, also known as perspiration, is a normal and healthy bodily function and it starts to occur just a few months after birth. We mainly sweat to cool our bodies down, a process called thermoregulation.