There are all-natural commercial deodorants, but you can also create your own natural deodorant to control sweat produced in your underarms. 1  Mix equal parts of baking soda and water to create a sweat-controlling paste, then let it sit for 20-30 minutes. 2  After that time, rinse off the mixture with water.here are all-natural commercial deodorants, but you can also create your own natural deodorant to control sweat produced in your underarms. 1  Mix equal parts of baking soda and water to create a sweat-controlling paste, then let it sit for 20-30 minutes. 2  After that time, rinse off the mixture with water.