I have been considering buying this product for several years, however the fear of its effectiveness along with the original cost held me back. Finally I decided to buy it this summer, and have not been disappointed. In this heat, I do need to shower and use it every day, but that is not abnormal for the summer months. I find that is works to stop odors so much better than regular deodorant, which tended to leave a strange deodorant type smell most days, and stained my clothes. Although it does cost a lot more to buy it than I am used to spending for deodorant, in the 7 weeks that I have been using this product, the size hasn't appeared to go down at all. I really like using this, and feel better about it for my health and clothing.