PROBLEM TO BE SOLVED: To provide a hair shampoo by which a flexible and moist finish can be given without feeling stickiness and heaviness.SOLUTION: The invention provides a hair shampoo containing N-acyl sarcosine salt, a betaine based-amphoteric surfactant, and an extract obtained from the fermented Poaceae plant fruit. Preferably, the Poaceae plant used for the extract obtained from the fermented Poaceae plant fruits is rice, and preferably, a microorganism used for fermentation is the microorganism belonging to Lachancea.SELECTED DRAWING: None