Lips · Side photo

Lip-chin fold angle

mentolabial angle

Smaller angles mean a deeper fold between lower lip and chin.

How it's measured

Angle at the deepest point of the fold below the lower lip (sublabiale) between the lower lip (labrale inferius) and the chin (pogonion), measured in front of the face.

Reference range

Male reference

110–130°

Female reference

110–130°

Source: Community facial analysis formula (public spreadsheet), top range: 110-130°. North American averages are about 114° (men) and 121° (women) (North American young-adult norms: Farkas LG, Katic MJ, Forrest CR. Ann Plast Surg 2007;59:692-698, as tabulated by Virdi SS, Wertheim D, Naini FB. Maxillofac Plast Reconstr Surg 2019;41:9).

In the score

Counts toward the score with weight 7.5 (Community formula point table: mentolabial angle, 7.5 points).

What changes it

• Measured on the skin outline, so muscle and soft tissue affect it as well as bone.

One number, one feature

One measurement describes one detail in one photo. Pose, lens and expression move it, and every reference range is an average from limited samples.