Most commercial deodorant products contain irritating or harmful ingredients

DEODORANT DATA

Most commercial deodorant products contain irritating or harmful ingredients, including aluminum salts and dyes. Avoid the antiperspirant varieties. You can find better products in health-food stores, such as those containing extracts of green tea, which is antibacterial.
If you buy "natural crystals," make sure they do not contain aluminum in any form.
Mix a cup of baking soda and 2 T. of cornstarch (to keep baking soda from clumping) and put it in a plastic container with a short-handled blush brush. Then after your shower you just brush on your deodorant. Since you're still a little moist, it doesn't have a problem sticking.