9 Surprising Reasons You Can't Stop Sweating

You're Borrowing Your Husband's Antiperspirant

If you're using a man's brand because you think it's stronger, don't bother, says dermatologist David Pariser, MD, co-founder of the International Hyperhidrosis Society. The active ingredient in most antiperspirants is an aluminum compound (you'll see it in different forms), and the concentration ranges from around 12 percent to 20 percent. Anything higher than 20 percent can cause irritation, which is why you'll only see amounts that high in "clinical" OTC versions or prescription formulations like Drysol.

One more thing: The main difference between basic men's and women's anti-sweat sticks is the scent.