PROBLEM TO BE SOLVED: To provide a method of removing a blotch in the skin and a blotch removing external preparation for the skin, which can improve a blotch removing effect of reducing a blotch produced in the skin by aging and sunburn.SOLUTION: The method of removing the blotch in the skin includes irradiating the skin with radioactive rays by a radioactive sintered compact obtained by sintering radioactive ore powder in the presence of electrolytically reduced water. Further, the blotch removing external preparation for the skin is composed of a combination of a radioactive sintered compact obtained by sintering radioactive ore powder and electrolytically reduced water irradiating radioactive rays by the radioactive sintered compact.COPYRIGHT: (C)2012,JPO&INPIT【目的】老化や日焼け等により皮膚に生じたシミを減じるシミ抜き効果を向上できる皮膚のシミ抜き方法及び皮膚のシミ抜き外用剤を提供する。【構成】電解還元水の存在下、放射性鉱石粉末が焼結された放射性焼結体によって皮膚に放射線を放射させることを特徴とする皮膚のシミ抜き方法、及び、放射性鉱石粉末が焼結された放射性焼結体と、該放射性焼結体によって放射線を放射させる電解還元水との組み合わせから成ることを特徴とする皮膚のシミ抜き外用剤、である。【選択図】 図1