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The Correlation of Sweating of Oil/wax Structure and Thermal Property  

Yun, Seiyoung (Department of Pharmaceutical Cosmetics, Gwangju Women University)
Kim, Jungil (Department of Pharmaceutical Cosmetics, Gwangju Women University)
Publication Information
Applied Chemistry for Engineering / v.24, no.2, 2013 , pp. 144-147 More about this Journal
Abstract
Sweating, which is the excretion of oil on the surface of a solid product containing several kinds of pigments in oil and is also solidified with wax, is a unique phenomenon often observed on the surface of cover make-up or lipstick. The cause of sweating is an imbalanced formula. Many studies have been conducted to decrease the symptoms of sweating in the field of cosmetics. Differential scanning calorimetry (DSC) is a thermo-analytical technique that measures the amount of heat required to increase the temperature of a sample as a function of temperature or time under certain conditions. DSC has been used to determine the thermal properties of oil/wax structures. This study investigates how the thermal characteristics correlate with the sweating symptoms. An oil/wax formulation with an optimal melting point was studied in an attempt to make a stable product by considering the thermal properties that represent minimal structural changes with temperature variation. In addition, the sweating of the oil/wax formulation was observed over a various temperature range. As a result, it was found that sweating was minimized when the structure remained static or little bit changed over a variety of temperatures.
Keywords
oil; wax; sweating; differential scanning calorimetry; thermal property;
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Times Cited By KSCI : 1  (Citation Analysis)
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