The quantitative analysis of spreadability, coverage, and adhesion effect after application of the base make‐up product

Background/purpose It is needed to evaluate the spreadability, coverage, and adhesion of facial base makeup products. Methods Using the oscillation applicator or hand application, 20 volunteers spread the liquid foundation on their faces and forearms. To assess the spreadability, coverage, and adhesion, we analyzed digital images of volunteers' faces to measure spreadability and coverage, and we measured the adhesion effect on the forearm by tape‐stripping. Results In terms of spreadability, coverage, and adhesion, the results of group who used the ‘oscillation applicator’ were significantly twice as high as the other group who applied by hand. Conclusion In this study, we demonstrated a method for quantitative assessing the effect of spreadability, coverage, and adhesion of the liquid foundation used in base makeup. Also, we discovered a distinction between using an oscillation applicator and using hand application. It is expected that image analysis assessment and tape‐stripping would be useful parameters for the evaluation of the facial base makeup.