Instrumental analyses are developed to evaluate physical and mechanical properties of a test substance. Main experimental test methods include: Water resistance/very water resistance/Waterproofness evaluation for make-up products and medical devices; volumizing and lengthening effect evaluation. PMMA plates for spectrophotometer readings or ex-vivo hair, in place of eyelashes, for macroscopic and microscopic image analysis are generally used as experimental matrices.
- Water resistance
- very water resistance