This test makes it possible to determine on the one hand an increase in volume and on the other lengthening of the eyelashes.

Human hair can be used as a substitute for eyelashes. Individual strands of hair are attached to special mountings to recreate eyelashes. The hair thickness or volume is measured using laser technology. The length of the hair is determined by image analysis. The eyelashes are coated with mascara in a standardized procedure and then individually measured again using laser techniques and image analysis.