Abstract: A method for preparing a cosmetic kit provides cosmetics which are customized (personalized) for each user and a cosmetic provision device which uses the kit to supply customized cosmetics. The cosmetic kit includes a plurality of cosmetic bases, and is used for customized cosmetics which are prepared by mixing the plurality of cosmetic bases in accordance with recipe information determined on the basis of user unique information. The method provides a cosmetic kit with a container containing at least two cosmetic bases selected from the plurality of cosmetic bases that is rotated at a prescribed speed, and a new-infrared measurement of the bases in the container is performed at prescribed time intervals, the time (T)required to obtain an nth measurement, in which the rate of change between the absorbance in the nth measurement and the absorbance in the previous ((n?1)th)measurement is 100%±5%, and the rate of change with respect to the absorbance in the following ((n+1)th) measurement is 100%±5%.

Abstract: An oil-in-water emulsion cosmetic using an ultramicroemulsion that is excellent in transparency and high in viscosity is provided. The oil-in-water emulsion cosmetic includes: (A) 10 to 50% by mass of an ultramicroemulsion including the following (a1) and (a2): (a1) is an anionic surfactant, and (a2) is a linear higher alcohol having 16 or more carbon atoms that can form an ?-gel in water in combination with (a1); (B) 0.2 to 2% by mass of a stearoxy hydroxypropyl methyl cellulose having the following formula (1); and (C) 0.1 to 1% by mass of a nonionic surfactant.

Abstract: A cosmetic kit provides cosmetics which are customized (personalized) for each user and a cosmetic provision device which uses the kit to supply customized cosmetics. The cosmetic kit includes a plurality of cosmetic bases, and is used for customized cosmetics which are prepared by mixing the plurality of cosmetic bases in accordance with recipe information determined on the basis of user unique information. The cosmetic kit provides that when a container containing at least two cosmetic bases selected from the plurality of cosmetic bases is rotated at a prescribed speed, and a near-infrared measurement of the bases in the container is performed at prescribed time intervals, the time (T) required to obtain an nth measurement, in which the rate of change between the absorbance in the nth measurement and the absorbance in the previous ((n?1)th) measurement is 100%±5%, and the rate of change with respect to the absorbance in the following ((n+1)th) measurement is 100%±5%, is not more than 35 minutes.

Abstract: The present invention provides a makeup cosmetic and method of manufacturing the same attained by a water-in-oil emulsion cosmetic supplemented with an oil-in-water emulsion as a water phase in which fine (nano-sized) oil droplets containing a solid oil and having a specified predetermined particle size are dispersed. Specifically, the present invention provides a makeup cosmetic comprising an oil-in-water-in-oil (O/W/O) composite emulsion in which an oil-in-water (O/W) emulsion is dispersed in an external oil phase, wherein the oil-in-water (O/W) emulsion comprises oil droplets having a number-average particle size of 200 nm or smaller and containing a solidified oil.