A newly devised apparatus (Scalp-Tension-Relaxer, STR) can efficiently promote hair regrowth in patients with male-pattern baldness. When this apparatus is applied, the scalp is pushed up to relieve tension on the vertex. The efficacy rate of hair regrowth in alopecia patients was 40%. An investigation into the basis for the hair regrowth caused by this apparatus was directed toward the changes in hemodynamics and skin temperature of the scalp. During and after use of this apparatus, subjects exhibited an increase both in the cutaneous blood flow rate (as determined by laser Doppler flowmetry) and in the cutaneous temperature (as determined by thermography).

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