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KMID : 0604520210470010041
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Journal of the Society of Cosmetic Scientists of Korea
2021 Volume.47 No. 1 p.41 ~ p.48
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A Study on the Effect of Pigments used in Cosmetic Manufacturing on the Form of Water Dispersible Formulations
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Kim Hyun-Jee
Oh Ji-Won
Kwak Byeong-Mun
Lee Mi-Gi
Bin Bum-Ho
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Abstract
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Formulations which are dispersed in water are often used in color cosmetics because they are characterized by no powder flying, not sticky, and high adherence while giving a light feeling of use. However, little research has been considered on the effect of the pigment on the above formulations used in color cosmetics. In this study, experiments were conducted to measure and analyze the effect of pigments on the formulation of pigments, organic pigments, and pearl polish, which are mainly used in the manufacture of color cosmetics, on appearance changes, pH changes, and photometric stability. Carmine or ferric ferrocyanide coated titanium dioxide mica-based pigments were not suitable for use due to poor photostability, with colors appearing on the surface from low viscosity formulations. Organic pigments had a good photostability of 1% of the formulation which are dispersed in water, but were not suitable for use because they came out of color on the water surface and did not spread well due to the clumping of powders. The titanium dioxide mica system pigments coated with pearl polish, inorganic pigments, and iron oxide were suitable for use due to their excellent appearance and optical stability in the formulation. Furthermore, the pH of all samples distributed by each pigment seems to be within the range of 3.0 to 9.0, which is suitable for cosmetic applications. This is expected to help manufacture color cosmetics with a stable water dispersible formulations by selecting and using stable pigments in anticipation of the behavior of pigments in the formulations.
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KEYWORD
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pigments, pH, aqueous dispersions, inorganic pigments, organic pigments
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