The present invention relates to a hairdye composition which is changed from a liquid phase to a gel phase. More specifically, the present invention relates to a hairdye composition which is changed from a liquid phase to a gel phase by mixing a first agent containing an alkalizer and an oxidizing dye and a second agent containing an oxidizing agent. According to the present invention, a phase-change hairdye composition comprises a first agent and a second agent which are separately and stably maintained in liquid phases before use, and an oxidizing dye is also stably dissolved in the first agent. In the case of mixing the first agent and the second agent in liquid phases, the viscosity of a mixed solution composed of the first agent and the second agent is increased so the mixed solution is changed from a liquid phase to a gel phase. Accordingly, the hairdye composition is easily applied, and the adsorption of the hairdye composition onto a user&primes hair is increased, thereby enhancing the transmissibility of the oxidizing dye. Furthermore, in the case of applying the phase-change hairdye composition in the present invention to a user&primes hair, the viscosity of the phase-change hairdye composition is maintained at a proper level, and the phase-change hairdye composition easily foams. Accordingly, the user&primes hair is easily dyed.COPYRIGHT KIPO 2016본 발명은 액상에서 겔 형태로 상변이되는 염모제 조성물에 관한 것으로서, 보다 구체적으로 알킬리화제 및 산화염료를 함유하는 1제 및 산화제를 함유하는 2제를 혼합하면 액상에서 겔 형태로 상변이되는 염모제 조성물에 관한 것이다. 본 발명의 상변이 염모제 조성물은 사용전에는 1제 및 2제가 각각 액상으로 제형이 안정하게 유지되고 염료도 1제에 안정적으로 녹으면서, 액상의 1제와 2제를 혼합하게 되면 혼합 용액의 점도가 증가하여 겔 형태로 상변이가 일어나, 염료 조성물의 도포가 용이하고 모발 흡착력이 증가하여 염료 전달력이 상승한다. 또한, 본 발명의 상변이 염모제 조성물은 모발 도포시 점도가 적절하게 유지되고 거품이 잘 발생하여 염색이 용이하다.
