Liquid detergent

A liquid detergent containing: at least 3 mass% of an [alpha]-sulfo fatty acid alkyl ester salt (a) as expressed in general formula (I); at least 5 mass% of at least one surfactant (b) selected from sulfonate anionic surfactants other than (a), sulfate ester anionic surfactants, and nonionic surfactants; and water-soluble magnesium salt (c), wherein the total content of component (a) and component(b) is 8-35 mass%, the content of component (a) is up to 50 mass% of the total surfactant mass, and the mass ratio expressed by component (c)/component (a) is 0.1-1.5. In the formula R1-CH(SO3M)-COOR2... (I), R1 represents a hydrocarbon group with a carbon number of 14-16, R2 represents a hydrocarbon group with a carbon number of 1-6, and M represents a counterion. 种液体洗涤剂，其含有3质量％以上的由通式(I)表示的α-磺基脂肪酸烷基酯盐(a)、5质量％以上的选自于除了(a)以外的磺酸型阴离子表面活性剂、硫酸酯型阴离子表面活性剂以及非离子表面活性剂中的至少1种(b)、和水溶性镁盐(c)；(a)成分和(b)成分的合计含量为8～35质量％；相对于表面活性剂的总质量，(a)成分的含量在50质量％以下；并且，由(c)成分/(a)成分表示的质量比为0.1～1.5。R－CH(SOM)－COOR...(I)，式中，R为碳原子数14～16的烃基，R为碳原子数1～6的烃基，M为抗衡离子