A Novel Quality Control Method for the Determination of the Refractive Index of Oil-in-Water Creams and Its Correlation with Skin Hydration

被引：2

作者：

Adejokun, Deborah Adefunke ^{[1
]}

Dodou, Kalliopi ^{[1
]}

机构：

[1] Univ Sunderland, Fac Hlth Sci & Wellbeing, Sch Pharm & Pharmaceut Sci, Sunderland SR1 3SD, England

来源：

COSMETICS | 2021年 / 8卷 / 03期

关键词：

sensory testing; refractive index; critical wavelength; turbidity; skin hydration; creams;

D O I：

10.3390/cosmetics8030074

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

The sensory properties of cosmetic products can influence consumers' choice. The accurate correlation of sensory properties, such as skin hydration, with the material properties of the formulation could be desirable. In this study, we aimed to demonstrate a new method for the in vitro measurement of the refractive indices (RIs) of turbid creams. The critical wavelength of each cream was obtained through direct measurement using a sun protection factor (SPF) meter; the wavelength value was then applied in the Sellmeier equation to determine the RI. The results obtained from the in vitro skin hydration measurement for each cream correlated with their RI values. This suggests that RI measurements could be a useful predictive tool for the ranking of creams in terms of their skin hydration effects.

引用

页数：6