Roll-on antiperspirants may be on the wane, but don’t count out the delivery system just yet. A new topical roll-on analgesic with both pain and pain preventive ingredients utilizes “old fashion,” natural pain inhibitors proven over the years, according to the manufacturer. Flex-RX helps to increase joint range of motion, flexibility, and it may help prevent muscle cramps and stiffness, says Terry Ann Yimin of Essere Corporation, who formulated the remedy for a father with chro...