An object of the present invention is to provide a hair cosmetic composition having fluidity suitable for hair cosmetics, high temperature stability of viscosity, and good feel of hair after use. In order to achieve the above object, a component (A) which is an aqueous gelling agent represented by the following general formula (1) and a component (B) which is either or both of a cationic surfactant and a cationic polymer are added. A hair cosmetic composition containing the component (A), wherein the viscosity of the 1% by mass aqueous solution of the component (A) at 25°C is 1,000 to 5,000 mPa·s, and the clouding of the 1% by mass aqueous solution of the component (A). Point is 60° C. or higher and 80° C. or lower, and the weight average molecular weight of the component (A) is 10,000 to 30,000, a method for producing the water-based gelling agent, and the hair cosmetic composition. A method of manufacturing the same is provided. (In the formula, R1, R2, R8 and R9 each independently represent a hydrocarbon group having 4 to 20 carbon atoms, and R3, R5 and R7 each independently represent a divalent group having 2 to 4 carbon atoms. R4 and R6 each independently represent a divalent hydrocarbon group having 3 to 16 carbon atoms, a and e each independently represent a number of 10 to 100, and d is 100 to 100. Represents the number of 500, g represents the number of 0-10.)毛髪化粧料に適した流動性を有し、粘度の温度安定性が高く、使用後の毛髪の感触が良好な毛髪化粧料組成物を提供することを目的とする。 上記目的を達成するため、下記の一般式（１）で表される水系ゲル化剤である成分（Ａ）及びカチオン性界面活性剤及びカチオン性ポリマーのいずれか若しくは両方である成分（Ｂ）を含有する毛髪化粧料組成物であって、成分（Ａ）の２５℃での１質量％水溶液の粘度が１，０００～５，０００ｍＰａ・ｓであり、成分（Ａ）の１質量％水溶液の曇点が６０℃以上８０℃以下であり、成分（Ａ）の重量平均分子量が１０，０００～３０，０００である毛髪化粧料組成物、該水系ゲル化剤の製造方法及び該毛髪化粧料組成物の製造方法を提供する。【化１５】（式中、Ｒ1、Ｒ2、Ｒ8及びＲ9はそれぞれ独立して炭素数４～２０の炭化水素基を表し、Ｒ3、Ｒ5及びＲ7はそれぞれ独立して炭素数２～４の２価の炭化水素基を表し、Ｒ4及びＲ6はそれぞれ独立して炭素数３～１６の２価の炭化水素基を表し、ａ及びｅはそれぞれ独立して１０～１００の数を表し、ｄは１００～５００の数を表し、ｇは０～１０の数を表す。）
