Underarm sweating problem? Help?!?

I tried it and it really did not help at all. My sister (of all people) told me about a product called Mon Ray Antiperspirant. I looked them up on the internet and this product is alot stronger than Certain Dri. Also, they offered a money back guarantee, so I thought, what the heck, I will try it. Well it really has helped quite a bit. I used to change my shirt at least twice a day, now I don't. I even use it on my hands to keep them from sweating as well. Look them up on the internet and see if this helps you. I really like the product.