Is there anything Botox can't do? The FDA last week approved the anti-wrinkle wonder drug for yet another use: drying out supersweaty armpits (a condition known as hyperhidrosis). In a trial of 322 patients, better than 80% cut their sweating by more than half--and these are folks who can sweat through a business suit in minutes. One treatment, which lasts six months, will cost $750. This brings to five the number of FDA-sanctioned uses for Botox. Can a cure for baldness be far behind?