PROBLEM TO BE SOLVED: To provide a beauty treatment instrument which sets an appropriate electrical reference value according to a users skin color to enable accurate detection of skin abnormalities such as spots regardless of skin color.SOLUTION: The beauty treatment instrument comprises: a skin stimulator 3 including a stimulation surface coming in contact with a skin surface to impart stimulation a skin stimulation source 116 for imparting a physical beauty treatment stimulation to the skin stimulator and a skin abnormality sensing part 88 for optically sensing a skin surface abnormality. The skin abnormality sensing part includes: a light emission part 138 for projecting examination light onto a site to be measured of the skin surface and a light reception part 139 for receiving examination light reflected off the skin surface and outputting an electrical output value according to the amount of received light. The beauty treatment instrument is configured to determine the condition of the skin surface by comparing the electrical output value of the light reception part with the electrical reference value. The beauty treatment instrument includes a storage part 177 to store the electrical reference value. If the amount of receive light is more than the reference light amount indicated by the electrical reference value, the beauty treatment instrument stores the electrical output value as a new electrical reference value. The term "physical beauty treatment stimulation" is a generic term for electric current stimulation, vibration stimulation, and thermal stimulation.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2018,JPO&INPIT【課題】ユーザーの肌の色に合わせた適正な電気的基準値を設定して、肌の色にかかわらずシミなどの肌異常を正確に検知できる美容器具を提供する。【解決手段】肌面に当接して刺激を付与する刺激面を含む肌刺激体3と、肌刺激体に物理的な美容刺激を付与する肌刺激源116と、肌面の異常を光学的に検知する肌異常検知部88とを備えている。肌異常検知部が、肌面の被測定部へ向かって検査光を照射する発光部138と、肌面で反射した検査光を受けて、受光量に応じた電気的出力値を出力する受光部139とを含む。受光部の電気的出力値と電気的基準値とを比較することにより、肌面の状態を判定できるように構成されている。電気的基準値を記憶する記憶部177を有し、受光量が電気的基準値が示す基準光量よりも多い場合に、電気的出力値を新たな電気的基
