The short answer
A face reads as masculine mostly because of bone: a defined angle at the back of the jaw, a chin that is broad and projects forward, and a lower face that stays wide rather than tapering to a point. When injectors add definition to a man’s jaw, they are reinforcing those three features. When filler makes a man look softer or more feminine, it is usually because one of them was ignored, most often by adding volume high on the cheeks.
This article explains what each proportion means, what the research says about how male and female faces differ, and which kind of filler suits each area.
The gonial angle: the corner of the jaw
The gonial angle is the corner where the vertical back edge of the jaw meets its lower border, roughly below your earlobe. A sharper, more defined corner reads as more masculine, and a softer, more open curve reads as more feminine. A review of facial feminization surgery lists prominent gonial angles and greater width between them among the hallmark masculine features of the jaw.
Measurements bear this out. In a radiographic study of 1,060 adults, the average gonial angle was about 118 degrees in men and 123 degrees in women, a statistically significant difference. The same study found that in men the angle became more open after about age 55, and that people who had lost their teeth tended to have larger angles. That is one reason a jaw that looked sharp at 30 can look blunted at 55, even at the same weight.
For injectors, the goal is usually to sharpen or restore that corner and make the lower border of the jaw read as a clean, straight line from the angle forward. A 2023 expert guideline on jawline treatment describes defining the gonial angle as one of the most common uses of filler in the jaw, and notes that a prominent, broad and straight jawline is widely seen as a marker of masculinity.
Chin projection: the front of the jaw
The chin sets how strong the lower face looks in profile. The same feminization review describes the male chin as broad, tall and wide, with greater forward projection than the female chin, which tends to be narrower and more pointed. On average, it notes, the male chin is about 17% taller.
Injectors judge projection in profile, comparing where the chin sits relative to the lips and the rest of the face. A chin that sits back makes the jaw look shorter and the neck less defined, even when the jawline itself is good. Adding projection, and some width at the front, often does more for a male profile than any amount of filler along the sides.
The width matters as much as the forward point. A narrow, pointed chin, even a projecting one, pulls the face toward a V shape. For men, injectors usually aim for a squarer front to the chin that continues the line of the jaw.
Jaw-to-cheek width: rectangle or heart
The third relationship is between the width of the jaw at its angles and the width of the face at the cheekbones. In a typically male face, the jaw is nearly as wide as the cheekbones, so the face reads as rectangular. In a typically female face, the cheekbones sit higher and project more while the jaw narrows, creating the classic heart shape. The feminization review describes the male midface as flatter, with less cheekbone projection and less of that triangular taper toward the chin.
Injectors use this as a relationship, not a fixed number. Published measurements come from specific populations, and what reads as balanced varies with ancestry, build and age. The practical rule is about direction: add width low, at the jaw angles, and be careful adding volume high and out on the cheekbones.
That shows up in real practice. In an age-matched analysis of 200 filler patients, cheek injections in men were placed lower and closer to the center of the face, while women’s were higher and more lateral. Men also had more jawline filler, and women more lip and mouth-area filler. Our page on whether filler will look feminine covers this in more detail.
Which filler suits each area
Different areas need different materials. The jaw needs something firm that holds an edge; the chin and cheeks need structure that still moves naturally.
| Area | Typical choice | Why |
|---|---|---|
| Jawline and gonial angle | RADIESSE (+), calcium hydroxylapatite | FDA-approved for jawline contour; firm enough to hold a defined edge on bone |
| Chin | JUVÉDERM VOLUMA, hyaluronic acid | FDA-approved for chin augmentation; can be dissolved if needed |
| Lower, central cheek | JUVÉDERM VOLUMA | FDA-approved for cheek volume; placed low and medial for men |
| Broad volume loss across the face | Sculptra | Builds collagen gradually rather than adding a defined shape |
RADIESSE (+) gained FDA approval for jawline contour in 2021, for moderate to severe loss of jawline definition in adults over 21. The 2023 guideline notes that its stiffness and viscosity let it sit on the bone and lift the tissue above it, which allows a defined edge and projection. VOLUMA’s chin augmentation approval came in 2020, adding to its earlier approval for the cheeks. Our comparison of JUVÉDERM and RADIESSE explains the trade-offs between the two materials.
Filler has limits. It adds structure but cannot remove fat under the jaw or tighten loose skin, and the 2023 guideline notes that satisfaction is likely to be highest in patients with good skin quality and without much laxity. Like any filler, these products carry a small risk of injection into a blood vessel, which is why anatomy and technique matter so much.
How Ultimate Male plans a jawline
At our San Gabriel and Downey clinics, dermal fillers are placed by nurses who focus on masculine facial contours. A good jawline consultation looks at photos from the front, side and three-quarter angle, then at your gonial angle, chin projection and jaw width together, because treating one in isolation is how faces end up looking unbalanced. Our page on jawline filler for men describes the treatment itself, and masculine facial contouring covers plans that include cheeks and temples.
Filler for appearance is cosmetic and generally not FSA or HSA eligible; you receive an itemized receipt, and financing through CareCredit, Prosper Healthcare Lending or Afterpay is available. To talk through what your face would benefit from, call 626-319-5261 or book a consultation.
