Fake.

John Madden says "Boom!  Tough-actin Tinactin" a lot.  But wouldn't you insinuate that Tinactin doesn't actually work, it just pretends to work?  I knew a guy who acted tough, but he was just acting, he wasn't really tough (Apollo Creed).  In fact, he died!

Choose what you spray on your diseased feet wisely, that's all.  Just a word of warning.