Affiliation:
1. L'Oréal Research and Innovation Paris France
Abstract
AbstractObjectivesTo evaluate, in vivo, a recently developed imaging system (Aeva‐HE™), based on fringe projection methodology: (i) its correlation with expert's assessments and real age of 85 French Caucasian women and (ii) its potential, as a screening tool, in rapidly selecting prototypes of tensile cosmetic products.Materials and MethodsFirst, the bare faces of 85 differently aged French/Caucasian women were photographed under standard conditions and further analyzed by the Aeva‐HE™ device. An expert aesthetician graded the severity of wrinkling on a fixed scale, helped by the use of a dedicated Skin Aging Atlas. A panel of 15 judges performed the same task on full‐face standard photographs. The Aeva‐HE™ software yielded various wrinkle's parameters (density, volume, mean depth, etc.) on different facial locations, according to age‐groups. Second, seven women, balanced in age and wrinkling severity, were recruited in a separate study. These women applied at Day 1 a prototype of the tensile product and at Day 2, they applied another prototype of the tensile product. The whole faces (before and after products application) of the seven studied women were captured and analyzed by the Aeva‐HE™ system.ResultsThe density of wrinkles was significantly highly correlated with the aesthetician scores and, unsurprisingly, with age. Some parameters (volume, depths) of different wrinkles (glabellar, crow's feet, cheeks) were quantified, showing different absolute values and of statistically different progressions with age. The amplitudes of the rapid effects brought by the two prototypes of tensile products were clearly differentiated.ConclusionThe recently developed device Aeva‐HE™ is an efficient system for rapidly establishing a faithful and precise status of facial wrinkles, in vivo and seems like a precious tool in the rapid screening of tensile products, possibly performed on a rather limited number of subjects.