Silicone replicas and non-contact methods are effective in analysing the micrometric scale of the plateaus and furrows that forms the skin microrelief. Yet, a major drawback is the obligation to capture data in research facilities. Therefore, the capacities of a connected portable camera device, the SkinCam, was evaluated to analyse the skin microrelief in real-time and while subjects were living their regular daily life routine. The effect of moisturisers on microrelief was also analysed. From RGB data, 3D depth maps were constructed using shape from shading algorithms. Roughness heterogeneity (Spa) was computed, and skin profiles were extracted to calculate furrows/plateaus features: numbers, depth/height and area, as well as the Ra roughness parameter of profiles. The inner forearm of 18 subjects (23-60 years old) was evaluated. While living their regular life, they self-performed triplicate acquisitions at various times. The effect of a vehicle cream containing moisturisers, either saccharide isomerate, urea or xylitylglucoside-anhydroxylitol-xylitol, was studied, using untreated skin as a reference. Considering 102 acquisitions series, results show sound coefficients of variation. We also find the known correlation between the age of subjects and the evolution of microrelief. Eight hours after a single application, all moisturisers induced a 1.6 to 2.1 folds decrease of Spa. Only saccharide isomerate and xylitylglucoside-anhydroxylitol-xylitol decreased Ra (-2.4/-2.3 folds). In terms of microrelief, the area of plateaus was reduced by 1.3 to 1.9 folds by all active ingredients, the highest effect being for xylitylglucoside-anhydroxylitol-xylitol. The height of plateaus is also diminished by all moisturisers, from -1.5 (urea) to -2.1 folds (xylitylglucoside-anhydroxylitol-xylitol). The SkinCam enables microrelief analysis, even under nomadic conditions. It allows monitoring of changes upon moisturisers application.

ESDR152 - Evaluation of the SkinCam, a Connected Portable Camera Device, for the Analysis of Skin Microrelief

50th Annual Meeting of the European Society for Dermatological Research. VIRTUAL MEETING