PROBLEM TO BE SOLVED: To provide a manufacturing method of a multicolor cosmetic that can improve designability by making boundaries of a cosmetic having a plurality of colors vague, and can change a pattern of the boundaries in the case where the cosmetic is reduced due to use.SOLUTION: A manufacturing method of a multicolor cosmetic 1 comprises a filling step, an immersion step, and a pattern forming step. In the filling step, a first cosmetic having fluidity and a second cosmetic having fluidity with a color different from the first cosmetic are filled into the cosmetic tray 2. In the immersion step, a tip part of a shaft-like body 6 is immersed into at least either one of the first cosmetic and the second cosmetic, which are filled into the cosmetic tray 2 in the filling step, to a depth not reaching a bottom surface of the cosmetic tray 2. In the pattern forming step, the shaft-like body 6 is vibrated at a vibration frequency of an ultrasonic wave region, by which a nonlinear pattern is formed so as to cross a boundary between the first cosmetic and the second cosmetic.SELECTED DRAWING: Figure 7COPYRIGHT: (C)2018,JPO&INPIT【課題】複数色の化粧料の境界を曖昧にしてデザイン性を向上させることができ、使用により化粧料が減った場合に境界の模様を変化させることができる多色化粧料の製造方法の提供。【解決手段】多色化粧料1の製造方法は、充填ステップと、浸漬ステップと、模様形成ステップとを備える。充填ステップは、流動性を有する第1の化粧料と、第1の化粧料と異なる色の流動性を有する第2の化粧料とを化粧皿2に充填する。浸漬ステップは、充填ステップにて化粧皿2に充填された第1の化粧料および第2の化粧料の少なくともいずれかに軸状体6の先端部を化粧皿2の底面に到達しない深さまで浸漬する。模様形成ステップは、軸状体6を超音波域の振動数にて振動させることによって、第1の化粧料および第2の化粧料の境界を跨ぐように非直線状の模様を形成する。【選択図】図7
