Chapman, 1992 (tweezing rate and bulb appearance)

Chapman, 1992

Title: The bare:ensheathed anagen root ratio as a function of the speed of epilation.

Author: Chapman DM

Journal: Clin Exp Dermatol 1992 Mar;17(2):99-101

Affiliated institution: Department of Anatomy, Dalhousie University, Halifax, N.S., Canada.

PMID: 1516250, UI: 92386750

Small tufts of chest hair were epilated at different rates and the roots classified as to growth phase, presence or absence of root sheaths and whether the shafts were fractured. With respect to anagen roots, a slow epilation gives bare roots whereas an increase in the rate of epilation increases the proportion of ensheathed roots. As the rate of epilation increases, the proportion of fractured hair shafts increases. These findings are relevant to epilation used as a diagnostic procedure because it is not possible to have both a high proportion of well-formed ensheathed anagen roots without some breakages.