TO be beautiful, it's said. In Japan, it also takes body heat. The mask can be sported around the house during moderate activity, but is even more effective when worn in a hot bath, users report. The manufacturer, Akaishi, says it has sold about 12,000 of the devices each month since it put them on the market last December.
Demand is still growing, it says.
There is no scientific evidence to support the claim that the mask actually reshapes the face. However, sweating is good for the skin. It unclogs pores and cleanses without the need for abrasives or chemicals. But users should take precautions. The mask is far more complicated than a sauna.