Gender differences in facial appearance are the result of hormonal and cultural influences. In general, men tend to have stronger, more angular facial features. Women tend to have rounder, more curved lines defining the face.
The gonial angle of the mandible is more defined and prominent in men. The chin is more prominent. Consequently, a receding chin in a man may cause him to be perceived as weak and ineffective. The forehead and zygomatic bones are more apparent in men. The eyebrows are thicker, straighter, and positioned at the supraorbital rim in men. Women’s brows are usually thinner, more arched, and positioned above the level of the supraorbital rim. Facial skin is usually thicker and more textured in men. Numerous differences are noticeable regarding the ideal noses of men and women. Men usually have larger, broader noses with a dorsum that is straight to slightly convex. Women tend toward smaller noses with a slightly concave dorsum. Their nasolabial angle is preferably obtuse, whereas most men prefer a nasolabial angle of no more than 90 degrees. Overall nasal contour is strongly associated with sex identity.