text: DVS experiments have been widely used in the study of personal care materials.  For instance, the moisturization of hair samples with different chemical (i.e. conditioning, coloring, and bleaching) and mechanical (i.e. perming, combing, and blow-drying) treatments.  The hydration behavior of skin samples has also been studied by DVS.  Other moisture sorption applications related to the personal care industry include the dehydration of contact lenses and superabsorbent polymers.