There are plenty of weird beauty products out there, but we reject most of them on the grounds that they don't actually work. These five unusual treatments, on the other hand, are grounded in science and do exactly as they claim, for better or for worse.
Placenta Hair Mask
Perhaps the most ubiquitous of bizarre beauty treatments, you can find a sachet of Hask Henna 'n' Placenta Conditiong Treatment ($0.98, walmart.com) for under $2 at just about any drugstore in America. The nutrient-rich placenta used in the formula comes from sheep, and it's an age-old treatment that helps to replenish protein to coarse or damaged hair as well as minimizing dandruff and scalp irritation.