PROBLEM TO BE SOLVED: To provide a hair dyeing or bleaching kit in a simple structure container which can simply form foam that can be easily and evenly applied to hair even by an unaccustomed person, with high degree of freedom in prescription, and excellent in storage stability of the agent and a favorable dying property.SOLUTION: A dying or bleaching kit comprises: a first agent containing an alkali agent a second agent containing an oxidant and an openable closed container, for forming foam of a mixture by injecting and shaking the first agent and the second agent, having antislip means of a projection shape, with respect to both of a longitudinal direction and a lateral direction, on a surface thereof.COPYRIGHT: (C)2015,JPO&INPIT【課題】容器構造が単純であり、簡便に泡を形成でき、慣れない人であっても簡単に毛髪にムラなく適用でき、処方の自由度が高く、剤の保存安定性にも優れており、染色性も良好な染毛又は脱色キットの提供。【解決手段】アルカリ剤を含有する第1剤、酸化剤を含有する第2剤、並びに第1剤及び第2剤を投入し振とうして混合液の泡を形成するための、開閉可能で表面に凸形状の縦方向、横方向の両方向に対する滑り止め手段を有する密閉容器を含む染毛又は脱色キット。【選択図】図1