PROBLEM TO BE SOLVED: To provide a two-pack hair dye or a two-pack decolorant, each of which is composed of a first liquid containing an alkali agent and a second liquid containing an oxidizing agent, the two-pack hair dye or a two-pack decolorant each being composed of the first liquid and the second liquid which are both in liquid state and are easily mixed with each other, and each have a viscosity with which the first liquid and the second liquid do not sag and drip when applied by using users own fingertips or hands.SOLUTION: Both of a first liquid and a second liquid are made to be in a liquid state, and to be easily mixed with each other, and a viscosity of 60,000-150,000 mPa s with which the first liquid and the second liquid do not sag and drip in use is obtained, by making the first liquid contain 25-50 wt.% of a nonionic surfactant, and the second liquid contain 0.1-10 wt.% of a polyoxyethylene polyoxypropylene alkyl ether.COPYRIGHT: (C)2013,JPO&INPIT【課題】 アルカリ剤を含有する第1液と酸化剤を含有する第2液からなる2液式染毛剤又は2液式脱色剤において、第1液、第2液共に液状であって、容易に混合ができて、自身の指先又は手を使用して塗布する場合に垂れ落ちがない粘度である2液式染毛剤又は2液式脱色剤を提供する。【解決手段】 第1液に非イオン性界面活性剤を25~50重量%、第2液にポリオキシエチレンポリオキシプロピレンアルキルエーテルを0.1~10重量%含有することにより、第1液、第2液を共に液状とすることができ、混合しやすく、使用時に垂れ落ちがない60,000~150,000mPa・sの粘度が得られる。【選択図】なし
