Z Hautkr. 1990;65(12):108o
Assessment of Hair-loss treatment methods,
With regard to hair regrowth induced by therapeutics, we must consider the activity of the hair follicle. This means that a study on the efficacy of hair regrowth treatments requires investigation of different kinds of follicular activity. The decision which technique depends on the reliability of the method in relation to the technical requirement, on the one hand, and the acceptance by the volunteer as well as the clinical type and degree of hair loss, on the other. Trichorhizogram results as the only means of evaluating the efficacy of hair growth therapeutics seem problematical, since an increase of the anagen rate does not absolutely correlate with a prolongation of the anagen phase.
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