Polymethylmethacrylate powders are commonly used to improve the spreadability and blurring effects of powder foundation cosmetics. In this study, the opacity and haze effect of four types of polymethylmethacrylate powders and their 10wt% powder foundation formulation was evaluated. The distorted random hemispherical particulates with both concave and convex portions showed the highest haze and opacity value as a single powder substance. And as a formulated phase, the powder foundation formulation containing particulates with fine pores provided the highest haze and opacity value. We also examined the quantity of reflected light over the angular range 20-75° by polarized light goniophotometry. The total reflected light intensity, surface-reflected light, and internally reflected light were characterized. These studies demonstrated that hemispherical PMMA powders produce natural brilliance by creating high internally reflected light which is similar to the total reflection profile of artificial skin.
© 2012 Optical Society of Korea
Original Manuscript: October 21, 2011
Revised Manuscript: November 24, 2011
Manuscript Accepted: December 16, 2011
Published: March 25, 2012
Sun-Kyung Choi, Young-Jun Yang, Kyung-Nam Kim, Jae-Wook Choi, Yeong-Jin Choi, and Sang-Hoon Han, "A Study of the Optical Properties of Cosmetics Measured by Polarized Light Goniophotometry," J. Opt. Soc. Korea 16, 36-41 (2012)
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