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http://dx.doi.org/10.9729/AM.2012.42.2.087

Property of Silica and Fine Structure of Cosmetic White Powders  

Jeon, Myung-Ok (Department of Cosmetic Biology, Graduate School of Engineering, KonKuk University)
Chang, Byung-Soo (Department of Cosmetology, Hanseo University)
Publication Information
Applied Microscopy / v.42, no.2, 2012 , pp. 87-93 More about this Journal
Abstract
In this study, fine structures of silica, titanium dioxide, talc and kaolin used in decorative cosmetics and the mixture extracted from BB cream cosmetics were observed by scanning electron microscopy. Kaolin had plate like shape structures of polygon with smooth surface and edge of kaolin had a relatively smooth appearance in comparison with talc. Also, thickness of each layer was estimated to about $0.1{\mu}M$ in the lump formed in stratum of several layers. Talc was observed by lumps shape phase of layering very thin flake. Boundary of thin flake was sharp or angular phase and thickness of flake was approximately 600 nm in diameter. When comparing the thickness of kaolin and talc, we was confirmed that kaolin was thicker than talc. Diameter of titanium dioxide was estimated to 0.2~0.3 ${\mu}M$ and surface of particle was a soft cubic form. Silica was confirmed that variety of size from 200 nm to $15{\mu}M$ of globular shape was measured. From the observation of inorganic pigments, silica was homogeneous dispersed in the BB cream cosmetics and among each other was filled with relatively small size like talc, kaolin, titanium dioxide and iron oxide. In conclusion, we suggest that silica at decorative cosmetics were formed in cosmetic coat at the skin as the minimum thickness.
Keywords
Cosmetics; Kaolin; Powder; Silica; Talc; Titanium dioxide;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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