PROBLEM TO BE SOLVED: To provide a hair cosmetic equipped with rheological properties in which equal dischargeability of a first agent and a second agent by a double structure container can be maintained with time.SOLUTION: There are provided a first agent and a second agent of a hair cosmetic which are independently filled into a double structure container having a specific ejection mechanism and ejected separately from each other by a propellant for pressurization, in which a viscosity ratio V30/V12 between viscosity V30 at 30 rpm and viscosity V12 at 12 rpm using a type B rotational viscometer is 0.5 or more for both agents, and values of the viscosity ratio V30/V12(f) in the first agent and the viscosity ratio V30/V12(s) in the second agent is within a range where the values do not exceed 1.3 times from each other.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】二重構造容器による第1剤と第2剤の等量吐出性を経時的に維持できるレオロジー特性を備えた毛髪化粧料を提供する。【解決手段】特定の吐出機構を持つ二重構造容器に各々独立に充填され、加圧用の噴射剤により互いに分離して吐出される毛髪化粧料の第1剤及び第2剤であって、B型回転粘度計を用いた30rpmでの粘度V30と12rpmでの粘度V12との粘度比V30/V12がいずれも0.5以上であり、第1剤における粘度比V30/V12(f)と第2剤における粘度比V30/V12(s)との値が互いに1.3倍を超えない範囲内である。【選択図】図1