Study of frontal hairline patterns for natural design and restoration.

Ideal reconstruction of scalp defects relies on a comprehensive understanding of scalp anatomy and detailed information of patient factors. The classification of the hairline and measured forehead reference lengths will be beneficial in the correction of wide foreheads. There were significant gender differences in the esthetic rankings of the hairline contour. Compared to women, both of the measured average forehead reference lengths displayed a significantly greater value in men. Our results clearly showed that sex difference affected the predominance of the contour type. The M shape was the most common, and the triangular type was poorly classified in men, whereas the rectangular hairline was the most common type among women.