Studies on rat hair cultures. IV. The effects of testosterone and dihydrotestosterone.

By means of two different quantification techniques the Authors were able to show that the addition of increasing concentrations of testosterone to the medium of hair-cultures simultaneously provokes an increased volume of epidermis as well as of hair-follicles and a better differentiation of hair follicles. The addition of dihydrotestosterone, on the contrary, does not induce any change.