PROBLEM TO BE SOLVED: To provide a light irradiation device that can perform an appropriate light adjustment according to the color of hair, and can perform light irradiation to skin.SOLUTION: The light irradiation device drives a light-emitting element by a light-emitting device drive circuit 25, and irradiates skin with light, and is provided with: an irradiation detection part 1 that acquires the color of hair and the color of skin by a detecting element and a controller 21 that controls light emitted by the light-emitting element based on the color of hair and the color of skin acquired by a detecting element 12.COPYRIGHT: (C)2013,JPO&INPIT【課題】 毛の色に応じて適切な光調整を行って皮膚に光照射を行うことができる光照射装置を提供する。【解決手段】 光照射装置は、発光素子駆動回路25により発光素子を駆動して皮膚に光を照射し、毛の色及び肌の色を検出素子により取得する照射検出部1と、検出素子12により取得された毛の色及び肌の色に基づいて、発光素子により照射する光を制御する制御部21とを備える。【選択図】 図4