The present invention has a function of sucking water in a blister by using osmosis. More specifically, a band using osmosis is provided in a small size like a finger band and a large size thereby being used in various ways. In addition, the band of the present invention allows the blister to be promptly removed without a scar. The present invention has a configuration that a piece of cloth immersed in salt water is attached on a structure which is similar to the band.COPYRIGHT KIPO 2014이 발명품은 삼투현상을 이용하여 물집에 있는 물을 빨아들이는 역할을 한다.
