For several years I have had underarm odor, even after cleaning. The odor was permanently in my skin. Tried all kinds of home remedies, vinegar, baking soda, lemon juice as well as many, many deodorants. The odor was still there. After only a week of using this deodorant stone I smell nothing. I cant tell you how relieved I am. Not sure what makes it work, but thank you so much for this product.