Get a slimmer face now!

This looks like a weird extension of wrapping a child's feet so they won't grow (popular in China way back for high-class girls, which lead to them needing servants to carry them all the time from having warped feet). I guess the idea is to wear it like you would a retainer to force your face to conform to the shape :f6:

Basically, from what I read, the mask works like a sauna.