Abstract

Ideal eyebrow aesthetics give a framework for brow rejuvenation and surgical procedures do not always provide satisfying results. Previous studies have shown elevation of the medial brow with aging; however, they failed to characterize overall shape changes. To characterize changes in eyebrow slope with increasing age to better direct brow rejuvenation. From standardized anteroposterior facial photographs of 100 women 20 to 80 years of age, eyebrow height was measured at the medial limbus and arch apex from a mid-pupillary horizontal. The slope of the eyebrow was calculated. Using group analysis, mean height and slope were compared using the Mann-Whitney U test. Regression analysis was used to determine the relationship between slope and age. Mean slope significantly decreased from 20 to 29 years of age to 40 to 49 years of age (0.22 versus 0.12; P=0.03), and then increased between 40 and 49 years of age and ≥60 years of age (0.12 versus 0.21; P=0.05). Medial height did not change significantly, and arch apex significantly decreased between 20 and 29 years of age and 40 and 49 years of age. Regression analysis showed a quadratic relationship between age and slope, with the decrease in slope until the fifth decade of life being directly related to increasing age. After this, age was not a significant contributor to slope changes. With increasing age, the slope of the eyebrow decreases until the fifth decade dependent on age. After the fifth decade, age no longer plays a significant role. Therefore, choice of brow lift technique should be carefully selected.

Full Text
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