Rough, dry foot calluses: Get some coarse kosher salt, or a little sea salt; place a tablespoon or 2 of olive oil to the device.
Nearly 5 million Americans age 50 and older are estimated for having dry eye, according on the National Eye Institute. http://clusterpower.org/__media__/js/netsoltrademark.php?d=Trademarketclassifieds.com%2Fuser%2Fprofile%2F980084