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Investigation of the homogeneity of the distribution of sunscreen formulations on the human skin:characterization and comparison of two different methods

Investigation of the homogeneity of the distribution of sunscreen formulations on the human skin: characterization and comparison of two different methods  Lire la suite ...

Importance of Substrate Roughness for In Vitro Sun Protection Assessment 

Importance of Substrate Roughness for In Vitro Sun Protection Assessment

Abstract : The purpose of this study is to demonstrate the influence of plate roughness on well-known absolute or relative UV spectroscopic indices such as the in vitro SPF, in vitro UVA PF (PPD), UVA/UVB ratio, critical wavelength and SPF/UVA PF (PPD) ratio. First a roughness index was measured by non-contact surface topography analysis on different PMMA plates which are available today on the European market  Lire la suite ...