Masks the smell of sweat. Ingredients like triclosan control the underarm bacteria that cause BO.
Contains aluminum salt, which keeps sweat glands from perspiring. “All antiperspirants are deodorants, but simple deodorants aren’t antiperspirants,” says Susan Biehle-Hulette, Secret’s senior scientist.
Serious sweat issues used to call for a prescription. Not anymore. “These deliver prescription-strength odor and wetness protection,” says Douglas C. Tomczak, deodorant research and development manager at Unilever.
Injections of botulinum toxin A -- which disables the armpits’ sweat glands -- have been approved by the FDA to treat severe underarm sweating.