Yeah, it's a small sample size. It's also not randomized or controlled and obviously not blind. It certainly doesn't inspire me to go out and spend $600 on one. But then when you consider that these things can be cheaply made at home, maybe it's worth trying as an experimental treatment.
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As each patient was troubled by Androgenetic Alopecia to start with, the authors did not want to clip additional
hair for the hair counts. Accordingly, they created a clear acrylic mold of each patient’s head,
with the front of the mold positioned at the hairline, and a one-centimeter square removed from the mold in the area of greatest alopecia in either the temporal or vertex region (Fig. 3). For the hair count, the hairs within the one square centimeter space were pulled through the opening, and then counted using a surgical skin hook and a lens with five times magnification.
Hair counts were carried out by both authors to confirm the accuracy of the data. To test the tensile strength of the hair before treatment and after six months of treatment, three typical terminal hairs were removed from the one square centimeter area and a VIP HairOScope (Belson Imports, Hialeah, FL) used to determine the tensile strength (Fig. 4).
