Disclosed is a pretreatment agent which can achieve a chemical treatment such as the formation of permanent waves or hair-dye uniformly only by pre-treating hair with the pretreatment agent, and which can impart smooth and soft touch to hair as if a hair treatment is applied to the hair after the chemical treatment. Specifically disclosed is a hair treatment composition which is characterized by comprising (A) a tertiary amine, (B) a quaternary ammonium salt and (C) a higher alcohol, wherein the ratio of the content of the higher alcohol to the total content of the tertiary amine and the quaternary ammonium salt is 0.1 to 1.0 by weight and the pH value of the whole composition is 7.0 or higher.本發明提供一種前處理劑,係僅藉由對毛髮進行前處理而不單可均勻地實施形成燙髮(permanent waves)或染色的化學處理,亦能夠在化學處理後獲得如同實施護髮(hair treatment)處理時之滑順且柔軟的毛髮觸感。又本發明提供一種毛髮處理劑組成物,係為含有(A)三級胺、(B)四級銨鹽、以及(C)高級醇的毛髮處理劑組成物,其中高級醇的重量對所述三級胺及四級銨鹽的總重量之比例為在0.1~1.0的範圍內,且組成物整體的pH為7.0以上。
