The aqueous hair cleansing agent of the present invention contains components (A), (B), (C), and (D) below:(A) from 1 to 30 weight % of a sulfate type anionic surfactant represented by the general formula (1) belowR1O(CH2CH2O)nSO3M (1)wherein in the general formula (1) above, R1 presents an alkyl group or alkenyl group having 10 to 18 carbon atoms, M presents an alkali metal, an alkaline earth metal, ammonium, an alkanolamine, or a basic amino acid, and n presents a number from 0 to 5 as a mass average;(B) from 0.1 to 10 weight % of a polyoxypropylene alkyl ether type nonionic surfactant represented by the general formula (2) belowR2O(CH2CH(CH3)O)mH (2)wherein in the general formula (2) above, R2 presents a straight chain or branched alkyl group or alkenyl group having 8 to 10 carbon atoms, and m presents a number from 0.5 to 4 as a mass average;(C) from 0.1 to 5 weight % of a monoalkyl glyceryl ether or monoalkenyl glyceryl ether type nonionic surfactant having an alkyl group or alkenyl group having 4 to 12 carbon atoms; and(D) from 0.1 to 10 weight % of an alkylhydroxysulfobetaine type amphoteric surfactant represented by the general formula (3) belowwherein in the general formula (3) above, R3 presents an alkyl group having 10 to 14 carbon atoms,the mass ratio of components (B) and (D) being (B)/(D)=3/2 to 1/4.