At a glance
- Term
- Mastic gum
- Area
- Looksmaxxing
- Measurable from a selfie
- Yes: masseter fullness at the jaw angle
- Evidence
- Mixed evidence
- Related
- Jaw exerciser, Gonial angle
What a fuller jaw corner means
When someone says mastic gum gave them a wider jaw, the word “wider” needs a closer look. They might mean the sides of their lower face look fuller, or they might mean the bone itself got wider. A little muscle growth could explain the first claim. It doesn't support the second.
The gonial angle is the bend where the lower edge of your jaw turns up toward your ear. It's a useful landmark for describing where you see fullness.
What you can measure from a selfie
Yes, you can assess visible masseter fullness at the jaw angle from a selfie. If you're comparing photos, keep your head position, expression and camera distance the same. Look at the outline near each jaw corner. Even a clear difference between the photos won't tell you how much muscle you've gained.
The free face-shape finder reads your length-to-width and jaw-to-cheekbone ratios on your device and names the closest face-shape prototype. Those ratios describe the outline of your whole face.
How to read a jaw-training claim
A forum label like “jaw gains” tells you what the person posting thinks happened. Take a before-and-after photo captioned “bone growth.” You might agree that the jaw looks fuller and still have no evidence for the caption. The same distinction applies to a photo credited to a jaw exerciser.
If your goal is a wider jawbone, skip the gum. If you're after a fuller-looking muscle, weigh that small possible change against the strain heavy chewing puts on your jaw joint.
Questions people ask
- Does jaw soreness mean my masseter is growing?
- Soreness doesn't tell you whether the muscle has grown. If chewing hurts your jaw, stop the session rather than using pain as a sign to keep going.
- Why is the evidence mixed if chewing works the muscle?
- Using your masseter and seeing a change in your face are different outcomes. Heavy chewing can build a little muscle, but that doesn't tell you whether you'll see a fuller jawline.
Written from the measurements and ingredient facts on this site, then checked for the usual mistakes. Not medical advice.
Related pages
The closest pages in this section, picked by topic rather than by date.
- jaw exerciser meaning: what it can changeLearn the jaw exerciser meaning, what masseter fullness shows in a selfie, and why possible muscle growth doesn't mean your jawbone changes.
- Gonial angle meaning and how to measure itUnderstand gonial angle meaning, where to measure it in a profile or three-quarter selfie, and why a photo reading isn't a fixed fact about
- Understanding debloating meaningLearn debloating meaning, how facial puffiness differs from structural change, and what comparisons with your own baseline can show.
- The face rating meaning behind a selfie scoreUnderstand face rating meaning, what a selfie score actually describes, and which questions to ask before treating an app's number as useful
- Looksmaxxing meaning: what the term coversUnderstand looksmaxxing meaning, how softmaxxing differs from hardmaxxing, and why a selfie can't prove that a method works for you.
- Understanding blackpill meaningUnderstand blackpill meaning, why evidence that looks matter doesn't support fixed outcomes, and what a selfie can and can't tell you.