Tribological Testing of Human Hand Skin

In order to investigate the skin biological and tribological properties of human hands and provide useful information for the manufacture of hand skin care products and other studies related to hand skin,testing of skin friction coefficient of hands was carried out on a multi-specimen test system.Twenty healthy volunteers were tested,the skin friction coefficient on the male hand back was lower than that on the female hand back,the female's was 0.48~0.49 and the male's was 0.38~0.49.There was not much difference on the skin friction coefficient of palm between male and female,the female's was 0.60~0.67 and the male's was 0.62~0.70.No much difference existed about the skin friction coefficient of dactylogram of male and female,the female's was 0.78~0.65 and the male's was 0.77~0.68.In addition,the friction coefficient of nails of female and male was 0.25~0.21 and 0.23~0.21,respectively.The magnitude order of skin friction coefficients of human hand in sequence of decreasement was the back,palm,dactylogram and nail.