Derivatives of 2-pyrrolidone-5-carboxylic acid having excellent moisturizing properties are provided which have the structure ##STR1## wherein R.sub.1 and R.sub.2 are the same or different and are lower alkyl and aralkyl and n is 1 to 8 and including cationic salts thereof such as the pyrrolidone carboxylic acid salt thereof. These compounds are useful as moisturizing agents. Cosmetics, shampoos, hair conditioners and skin toners containing such compounds are also provided.
提供了具有优异保湿性质的
2-吡咯烷酮-5-
羧酸的衍
生物,其结构为##STR1##其中R.sub.1和R.sub.2相同或不同,为低碳烷基和芳基烷基,n为1至8,包括其阳离子盐,如
吡咯烷
酮羧酸盐。这些化合物可用作保湿剂。还提供了含有这些化合物的化妆品、洗发
水、护发素和皮肤爽肤
水。