Body odour. It's something we've all experienced, whether that be on ourselves or on others around us. And what causes body odour you ask? Natural bacteria that grows all over the body, including your armpits. Many people think it's the production of sweat that causes you to smell, but actually it's when the bacteria on your skin mixes with sweat that your body will start to produce an unpleasant odour. When this sweat bacteria is broken down, it is broken down into acids, and this is what gives off a smell. By using an antibacterial deodorant, you can help kill and slow down the number of bacteria growing in your underarm throughout the day. That means fewer sweat bacteria will be broken down into acids, and you'll experience less BO.