I've heard a lot of weird things that are supposed to be good for hair but never heard about Monistat. I use it as a diaper cream on my daughter actually. Her doctor said a lot of diaper rashes are caused by yeast. But that's the only other use for Monistat I've ever heard of.
The is a chafing cream made by Monistat (I guess to protect sensitive areas from chafing when wearing thongs or bikinis.) and some people swear by using it as a makeup primer (some say better than Smashbox!!) or smoothing on your feet to keep your heels from rubbing blisters. I bought some to try it as a primer but I haven't done it yet. It does feel a lot like several primers I've used, and WAAAAAY cheaper.