This invention provides a hair shampoo composition in a condensed liquid state which will not produce precipitates of a cationized polymer, and a method for producing such composition. The hair shampoo composition in a condensed liquid state of this invention contains: (A) a 0.1 to 5mass% cationic polymer having a construction represented by the following formula (1) wherein R represents a primary-tertialy amino group, a quarternary ammonium group, or an alkyl group having a number of carbon atoms of 1 to 3 which may have a hydroxyl group, X- represents a mono-valent anion in such a number that renders the above construction in an electrically neutral state and, (B) 40 to 60mass% anionic surfactant, and (D) 45mass% or less of water.