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KMID : 0604520180440030267
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Journal of the Society of Cosmetic Scientists of Korea
2018 Volume.44 No. 3 p.267 ~ p.275
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Quantitative Analysis for the Amount of Coacervate in a Shampoo Formulation
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Song Sang-Hoon
Song Sang-Hun
Son Seong-Kil
Choi Soo-Gyu
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Abstract
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This study attempts to quantify amount of coacervate generated in a formulation of shampoo with three methods using optical transmission, suspension in a glass tube, and centrifugation. For the correct data acquisition, each method has been optimized to estimate the amount of coacervate with minimum standard deviation. To simply and quantitatively estimate amount of coacervate, two formulations of shampoo were employed as a large or small amount of coacervate generated. Comparisons of the two formulations in repetitive measurement elucidated that the methods by the centrifugation efficiently can be utilized to estimate the accurate amount of coacervate. Additionally, the amount of coacervate by the centrifugation does not exhibit the difference of patterns before and after drying in a shampoo formulation with different conditioning polymers, and this suggests that the centrifugation is a superior method to compare amount of coacervate in liquid.
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KEYWORD
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coacervate , conditioning polymer , shampoo
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