Quantification of Human Hair Moisturization with Cosmetic Products by Dynamic Vapor Sorption.

IF 0.2 4区 医学 Q4 CHEMISTRY, APPLIED Journal of cosmetic science Pub Date : 2020-09-01
Y K Kamath
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Abstract

An attempt has been made to evaluate and quantify the moisturizing efficacy of cosmetic products by dynamic vapor sorption method. The possibility of quantifying this effect by the application of the second law of thermodynamics to sorption hysteresis has been demonstrated. The results show that the ordinary conditioner actives in rinse-off formulations show limited moisturizing capabilities. However, specially formulated products can show, quantifiably, both moisturizing and desiccating effects. From the Brunauer, Emmett and Teller (BET) theory, total pore volume obtained from the literature by nitrogen adsorption, and the sorption data from this work, it has been possible to show that the sorbed water in hair does not distribute uniformly in the hair. This is in agreement with the X-ray diffraction measurements and the more recent work on small angle neutron scattering on D2O-saturated hair.

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用动态蒸气吸收法定量测定化妆品对人发的保湿作用。
尝试用动态蒸汽吸附法对化妆品的保湿效果进行评价和定量。用热力学第二定律对吸收迟滞进行量化的可能性已经得到了证明。结果表明,普通护发素活性在冲洗配方显示有限的保湿能力。然而,特殊配方的产品可以显示,定量,保湿和干燥的效果。从Brunauer, Emmett and Teller (BET)理论,从文献中通过氮气吸附得到的总孔体积,以及本工作的吸附数据,可以证明头发中被吸附的水在头发中并不是均匀分布的。这与x射线衍射测量和最近对d20饱和头发的小角度中子散射的研究一致。
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来源期刊
Journal of cosmetic science
Journal of cosmetic science 工程技术-皮肤病学
CiteScore
0.90
自引率
0.00%
发文量
26
期刊介绍: The JOURNAL OF COSMETIC SCIENCE (JCS) publishes papers concerned with cosmetics, cosmetic products, fragrances, their formulation and their effects in skin care or in overall consumer well-being, as well as papers relating to the sciences underlying cosmetics, such as human skin physiology, color physics, physical chemistry of colloids and emulsions, or psychological effects of olfaction in humans. Papers of interest to the cosmetic industry and to the understanding of the cosmetic markets are also welcome for publication.
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