5 Days DEO is the result of a new groundbreaking technology that makes it possible to make your sweat odorless for up to 5 days - even if you bathe!. 5 Days DEO neutralizes the bacterial environment in the sweat glands. No active bacteria = No sweat odor.5 Days DEO contains no harmful chemicals. Has been prepared in collaboration with Asthma Allergy Denmark and gets top marks in the Consumer Council's chemistry magnifier - "Think chemistry".5 Days DEO does not contain perfume and is therefore odorless. You can easily use it with your favorite scent, which then lasts much longer. Sweat by itself doesn't, in reality, have any smell. The smell that all of us know comes from bacteria. This kind of bacteria is completely common on human skin. 5 Days DEO neutralizes the bacteria on our skin and stops its activity.