This hair treatment agent contains components (A)-(C), and the mass ratio (A)/(B) of the component (A) to the component (B) is 0.001-0.50, wherein (A) is a cationic polymer having a charge density of 3.0-24 meq/g, (B) is a cationic polymer having a charge density lower than 3.0 meq/g, and (C) is a fatty acid or a salt thereof.本發明係一種毛髮處理劑,其含有成分(A)~(C),且成分(A)相對於成分(B)之質量比(A)/(B)為0.001以上且0.50以下。 (A)電荷密度為3.0 meq/g以上且24 meq/g以下之陽離子性聚合物 (B)電荷密度未達3.0 meq/g之陽離子性聚合物 (C)脂肪酸或其鹽無