“…The hair follicles of the head of the eyebrow are oriented almost vertically, whereas those of the body and the tail are finer and become more horizontally oriented with increasing distance from the midline. 2 The position of the eyebrows differs between the sexes; in women, the eyebrows are usually more arched and in a slightly higher position than in men. 3 Beneath the skin of the eyebrows are the frontalis, orbicularis oculi, pyramidalis, and corrugator muscles.…”