PROBLEM TO BE SOLVED: To provide an evaluation method of hairdressing performance of a hairdressing agent capable of objectively and accurately evaluating hairdressing performance of a hairdressing agent, with a simple operation, in human hair under various conditions, and a head model for evaluation.SOLUTION: In an evaluation method of hairdressing performance of a hairdressing agent, a head model which comprises a hair bundle composed of hair and a substrate is used. In the head model, one end of hair constituting the hair bundle is fixed to the substrate so that a cuticle direction will be in the same direction as hair on a human head. After hairdressing the head model by applying the hairdressing agent, secular change in the bundle shape is examined while contacting a scalp sebum component with the hair bottom, and hairdressing performance of the hairdressing agent is evaluated by the secular change in the bundle shape. A head model comprises a hair bundle 13 composed of hair 12 and a substrate 11. In the head model, one end of hair 12 constituting the hair bundle 13 is fixed to the substrate 11 so that a cuticle direction will be in the same direction as hair on a human head.COPYRIGHT: (C)2015,JPO&INPIT【課題】種々の条件下にヒトの毛髪での整髪剤の整髪性能の評価を簡便な操作で客観的かつ的確に行なうことができる整髪剤の整髪性能の評価方法及び評価用頭部モデルの提供。【解決手段】整髪剤の整髪性能の評価方法であって、頭部モデルとして毛髪からなる毛束と基材とを有し、キューティクルの方向がヒトの頭部の毛髪と同じ方向となるように毛束を構成する毛髪の一端が前記基材に固定された頭部モデルを用い、当該頭部モデルに整髪剤を適用して整髪した後、前記毛髪の根元に頭皮脂成分を接触させながら前記毛束の形状の経時的変化を調べ、前記形状の経時的変化によって整髪剤の整髪性能を評価する整髪剤の整髪性能の評価方法、及び毛髪12からなる毛束13と基材11とを有し、キューティクルの方向がヒトの頭部の毛髪と同じ方向となるように毛束13を構成する毛髪12の一端が基材11に固定されてなる頭部モデル。【選択図】図1
