Can you raise your hand if you're sure ? Thanks to summer's brutal heat and humidity, I can't. So I'm always willing to try a new deodorant and antiperspirant, and eagerly attended a press preview of the Body Shop's DeoDry in NYC's Tompkins Square Park. Cheryl Burke keeps cool with DeoDry. The deodorant promises 24-hour protection (I'll let you know), and who better to test drive it than "Dancing with the Stars" pro Cheryl Burke and a group of roller derby gals. Best of all, Deo-Dry is chemical free. Instead of aluminum salts, DeoDry is made with volcanic mineral and essential oils and comes in several refillable scents. For a limited time, the natural deodorant is on sale for $4! If you're in the Big Apple this weekend, you can score free samples from the Body Shop Roller Derby team. Here's the Body Shop DeoDry freebie schedule: Saturday (June 26) 11 a.m. - noon at 125th Street 1:45 p.m. - 3 p.m. at Madison and 85th