Everything You've Ever Wanted to Know About BO — and How to Stop It

Dr. Cook-Bolden suggests using antiperspirant liberally and often. "Use heavy duty antiperspirants that also contain deodorants if possible. These can even be used twice a day (but start out once daily and make sure it is not irritating to your skin)."

Our current favorite pick is Secret Fresh Antiperspirant and Deodorant Invisible Solid in Cool Waterlily ($5), which smells like a fresh bouquet of flowers.