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September 1988

Human Hair FormMorphology Revealed by Light and Scanning Electron Microscopy and Computer Aided Three-Dimensional Reconstruction

Author Affiliations

Urban Kaveus

From the Department of Medical Biophysics, Karolinska Institute (Drs Lindelöf and Forslind, and Mr Kaveus) and the Department of Dermatology, Karolinska Hospital (Drs Lindelöf and Hedblad), Stockholm.

Arch Dermatol. 1988;124(9):1359-1363. doi:10.1001/archderm.1988.01670090015003

• The alleged relationship between the cross sectional shape of the hair shaft and the form of the hair, eg, curly or straight hair, has been challenged. By serial sections of human hair follicles from ten patients representing the three biological races, the relation between the follicle form and the hair form was studied. Using three-dimensional computer-aided reconstruction it was demonstrated that the follicle form determines the hair form, eg, the Negroid follicle has a helical form, whereas that of the Oriental follicle is completely straight. The caucasoid follicle represent variation between these extremes. However, even a straight caucasoid follicle may produce a hair shaft that has an oval cross section.

(Arch Dermatol 1988;124:1359-1363)