Tunetti's all-natural deodorant does not contain baking soda so there is not issue with a burning rash when transitioning to a natural product. Note: Transitioning to a natural deodorant can be difficult for some people. This article explains the process. https://www.realsimple.com/beauty-fashion/skincare/bath-body/natural-deodorant The product is sold in a 2.5-ounce white deodorant plastic applicator.