To hardly shave skin while shaving hair and a beard and to attain a sanitary shave by roundly polishing the edge part of a razor and obtaining an extremely fine roundness.

Leather, paper or cloth or the like is made to be flat or round, a razor 1 is erected at is inner side, the part of the edge 3 of the razor 1 is reciprocatively moved several times and the end part of the edge 3 is polished to be round and formed to have the fine roundness. Thus, skin is prevented from being shaved simultaneously with the shave of hair or the beard and also unsanitary state owing to the skin roughened by the razor 1 is prevented so that the comfortable shave is attained.