A gel-form hair cosmetic composition, which is a gel-form aqueous composition containing the following components (a), (b), and (c) emulsified in an aqueous component, which gel exhibits an endothermic peak temperature of 40°C to 75°C as measured by means of a differential scanning calorimeter, wherein the components (a), (b), and (c) are: (a) a polyalkyleneimine derivative or a salt thereof, the polyalkyleneimine derivative being formed of a polyalkyleneimine having a weight average molecular weight of 3,300 or more to 50,000 or less, in which at least one of the substituents represented by any of formulas,, and is bonded to 40 mol% or more of the nitrogen atoms of the polyalkyleneimine, the formulas being: R 1 -CO- R 2 -(CH 2) n -CHX-CH 2 - R 3 -NH-CO- [wherein, in formula, R 1 represents a group selected from the group consisting of a hydrogen atom, and an alkyl group, an alkenyl group, and a hydroxyalkyl group, in the form of a linear chain group or a branched chain group; in formula, R 2 represents a group selected from the group consisting of a hydrogen atom, and an alkyl group, an alkoxy group, an alkenyl group, and an alkenyloxy group, in the form of a linear chain group or a branched chain group; n is an integer of 0 or 1; when R 2 is a hydrogen atom, a linear-chain or a branched-chain alkyl group, or a linear-chain or a branched-chain alkenyl group, n is 0; when R 2 is an alkoxy group or an alkenyloxy group, n is 1; and X represents a hydrogen atom or a hydroxyl group; in formula, R 3 represents a group selected from the group consisting of a hydrogen atom, and an alkyl group and an alkenyl group, in the form of a linear chain group or a branched chain group; and R 1, R 2, and R 3 may be identical to or different from one another, and at least one of R 1, R 2, and R 3 is a group having 13 or more carbon atoms; the entirety of R 1, R 2, and R 3 has an average number of carbon atoms of 9 or more; and the entirety of R 1, R 2, and R 3 has a linear group content of 30 mol% or more]; (b) a C12 to C28 saturated aliphatic alcohol; and (c) a cationic surfactant. (a) a polyalkyleneimine derivative or a salt thereof, the polyalkyleneimine derivative being formed of a polyalkyleneimine having a weight average molecular weight of 3,300 or more to 50,000 or less, in which at least one of the substituents represented by any of formulas,, and is bonded to 40 mol% or more of the nitrogen atoms of the polyalkyleneimine, the formulas being: R 1 -CO- R 2 -(CH 2) n -CHX-CH 2 - R 3 -NH-CO- [wherein, in formula, R 1 represents a group selected from the group consisting of a hydrogen atom, and an alkyl group, an alkenyl group, and a hydroxyalkyl group, in the form of a linear chain group or a branched chain group; in formula, R 2 represents a group selected from the group consisting of a hydrogen atom, and an alkyl group, an alkoxy group, an alkenyl group, and an alkenyloxy group, in the form of a linear chain group or a branched chain group; n is an integer of 0 or 1; when R 2 is a hydrogen atom, a linear-chain or a branched-chain alkyl group, or a linear-chain or a branched-chain alkenyl group, n is 0; when R 2 is an alkoxy group or an alkenyloxy group, n is 1; and X represents a hydrogen atom or a hydroxyl group; in formula, R 3 represents a group selected from the group consisting of a hydrogen atom, and an alkyl group and an alkenyl group, in the form of a linear chain group or a branched chain group; and R 1, R 2, and R 3 may be identical to or different from one another, and at least one of R 1, R 2, and R 3 is a group having 13 or more carbon atoms; the entirety of R 1, R 2, and R 3 has an average number of carbon atoms of 9 or more; and the entirety of R 1, R 2, and R 3 has a linear group content of 30 mol% or more]; (b) a C12 to C28 saturated aliphatic alcohol; and (c) a cationic surfactant.