Gimp Masks in the Name of Beauty

I saw these bizarre masks in a shop called Loft in Fukui. At first I thought they were some sort of sex aid, but it turns out that they're "sweat masks". It says on the back of the packet that "Focused perspiration will trim away unwanted fat and make you look slim and healthy". At last - a beauty solution for women with outsized faces.


I'm not sure how long you have to wear this thing before your face gets thinner.