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Design and development of an innovative hybrid powder based on a computer simulation and its application to foundation makeup products

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An innovative hybrid powder prepared using computer simulation allowed development of a new foundation having a fine, smooth texture that has never been achieved before. The optical structure/design of the powder was based on the results of measurements and analyses conducted on the optical characteristics of a baby's delicate skin, which is the envy of many women. To obtain the optimal optical characteristics, the finite differential time domain (FDTD) method for solving Maxwell's differential equation by difference and time domain was applied to the computer simulation method. For synthesis of the hybrid powder based on the optical model, a proprietary shape regulation coating technology was used in which flaky substrates were coated with microspherical forms of barium sulfate crystals. The hybrid powder developed exhibited optical characteristics that showed a significant diffusion characteristic in the visible light region. The foundation containing this powder could conceal pores, small wrinkles, freckles, and age spots and owing to its microscopic reflection characteristics provided a fine, smooth texture that has never before been available with a conventional foundation.
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Document Type: Abstract

Affiliations: 1: Shiseido Research Center, Tsuzuki-ku Yokohama-shi, Japan 2: Department of Electrical and Electronic Engineering, Faculty of Engineering, Yamanashi University, Kofu-shi, Japan

Publication date: February 1, 2008

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