PROBLEM TO BE SOLVED: To provide a detergent composition practically excellent in foam performance such as foaming power, creaminess of foams, and retention property of foams, less in protein modification and high in safety.SOLUTION: There is provided a detergent composition containing N-acylaspartic acid represented by a specific general formula (1) and/or a salt thereof, in which the N-acylaspartic acid and/or the salt thereof contains a component (a): N-acylaspartic acid in which R1 is a linear alkyl group having 7 to 13 carbon atoms and/or a salt thereof and a component (b): at least one kind selected from the group consisting of N-acylaspartic acid in which R1 is a linear alkyl group having 14 to 23 carbon atoms and/or a salt thereof and N-acylaspartic acid in which R1 is a linear alkyl group having 10 to 23 carbon atoms and/or a salt thereof, and a blended ratio of the component (a) and the component (b) (mass ratio:(b)/(a)) is more than 0 and less than 1.0.SELECTED DRAWING: NoneCOPYRIGHT: (C)2020,JPO&INPIT【課題】本発明は、起泡力、泡のクリーミー性、泡の保持性等の泡性能が実用上に優れ、タンパク変性が少なく安全性が高い洗浄剤組成物を提供することを目的とする。【解決手段】本発明は、特定の一般式（１）で表されるＮ－アシルアスパラギン酸及び／又はその塩を含み、前記Ｎ－アシルアスパラギン酸及び／又はその塩が、成分（ａ）：Ｒ１が炭素数７以上１３以下の直鎖アルキル基であるＮ－アシルアスパラギン酸及び／又はその塩と、成分（ｂ）：Ｒ１が炭素数１４以上２３以下の直鎖アルキル基であるＮ－アシルアスパラギン酸及び／又はその塩、並びに、Ｒ１が炭素数１０以上２３以下の分岐アルキル基であるＮ－アシルアスパラギン酸及び／又はその塩からなる群より選択される少なくとも１種と、を含み、前記成分（ａ）と成分（ｂ）との配合比（質量比：（ｂ）／（ａ））が０を超えて１．０未満である、洗浄剤組成物。【選択図】なし
