How does it compare to visual lay person rating of skin radiance?

The purpose of this work was to develop a new method to measure soft focus properties of cosmetic products on living forearm skin as a screening method to select a candidate for a larger claim support study with the parameters skin radiance, attractiveness and skin evenness rated by lay persons and trained raters on standardized facial photographs. The results of the claim support study were expected to proof the success of the pre selection method.

Material & Methods
Screening Study on Volar Forearm It was assumed that the soft focus on forearm skin (Figure 1 + 2) can be used to screen and select the best candidate for a larger study with facial application and assessment of facial radiance. We chose real in vivo skin on the arm, because it was assumed that it simulates facial skin better than any artificial material. However, the forearm partly lacks the inhomogeneity of the facial skin and contains almost no sebum.

Read more…