Oval, heart, square, round. Every practice publishes the same four categories with the same four recommendations. It's tidy, it's shareable, and it's close to useless for planning an actual treatment.
Face shape describes your outline. Filler treats what sits beneath it. Two people with identical "heart-shaped" faces can need entirely different treatment depending on bone structure, where their fat pads sit, skin thickness, and which areas have actually lost volume. The four determinants that matter are bone, fat pad position, skin quality, and where volume was lost — none of which correlate reliably with shape.
Search "which filler for my face shape" and you'll find the same article on dozens of practice websites. Oval means you're naturally balanced, so keep it subtle. Heart means chin. Square means soften the jaw. Round means contour and elongate.
It persists because it's easy to write, easy to read, and easy to share. It gives patients a category to identify with and gives practices something to publish.
It's not wrong so much as it's answering a different question than the one that matters.
Your face shape is the outline you'd get by tracing a photograph. Filler is placed in layers — on bone, within fat compartments, in the dermis — and what it does depends entirely on which layer and which compartment.
Two patients can both be "round." One has genuinely wide zygomatic bone. The other has descended midface fat pads that have pooled lower in the face. Same outline. Opposite treatments.
Adding cheek volume to the first makes the face wider. Restoring midface support in the second lifts the pooling and the roundness resolves. A framework that puts them in the same bucket has told you nothing useful.
None of these are visible from a face-shape category. They're assessed by looking at the face, palpating it, and comparing it to what it used to look like.
Partial credit where it's due. The four categories carry some real information, just less than they imply.
The pattern: every row's real answer depends on the cause, not the shape. Which is the argument.
The other version of this question is "which brand should I get" — Juvéderm, Restylane, RHA, Radiesse. That's also less important than it seems.
What matters is the physical properties of the product relative to where it's going:
Every major manufacturer makes products across that range. Brand loyalty is largely a marketing artifact; matching properties to the layer is the actual skill.
Hyaluronic acid fillers are reversible — hyaluronidase dissolves them. Collagen biostimulators and calcium hydroxylapatite are not, or not readily.
That's a real consideration if you're new to filler or unsure about a result. It's also why ultrasound-guided dissolving exists as a treatment at all — a meaningful proportion of the work here is correcting filler placed elsewhere.
Rarely because of the product. Usually one of three things:
The clearest example is the nasolabial fold. Patients point at the line and ask for it filled. But the fold is frequently a shadow cast by midface descent — the tissue above it has dropped. Fill the fold directly and the line softens while the face reads heavier. Support the midface and the fold often improves without being touched.
The overfilled look almost never comes from one appointment. It develops across years — a little more each visit, across multiple providers, with nobody holding the total. Each individual decision was reasonable. The sum wasn't.
An inspiration photo shows a result built on different bone, different fat distribution, different skin. Reproducing the volume doesn't reproduce the effect — it produces that volume on your structure, which looks like something else entirely.
The most useful photos at a filler consultation are of you, five to ten years ago. They show what your face looked like with volume it has since lost — which is a target that already suits your structure, because it was your structure.
Photos of other people are still worth bringing to communicate preference. They're just not a plan.
At consultation, Dr. Mortazavi assesses bone structure and where it provides support, the position and volume of the facial fat compartments, skin thickness and quality, and how the face moves — since a result that looks right at rest and wrong in animation is a common failure.
Where several areas are involved, facial balancing treats the face as one structure rather than a series of separate purchases. That distinction matters more than any product choice, because areas interact — adding chin projection changes how the jawline reads, and midface support changes the nasolabial fold.
And sometimes the assessment concludes that filler isn't the answer. Skin quality problems need resurfacing. Laxity you can grasp needs surgery. A wide muscular jaw needs neurotoxin. Being told that costs a consultation and saves considerably more.
Patients arrive having decided they're a heart shape and therefore need chin filler. Sometimes that's right. More often what I'm actually looking at is midface descent, and the lower face reads narrow by comparison rather than being narrow. Treating the comparison instead of the cause is how people end up with more product and less improvement.
Does face shape determine which filler I need?
Only loosely. The four-shape framework — oval, heart, square, round — is a rough description of outline, not of the structures filler actually treats. Two people with the same face shape can need entirely different treatment depending on their bone structure, where their facial fat pads sit, their skin quality, and which areas have lost volume. Planning from shape alone is why some filler results look generic.
What actually determines where filler should go?
Four things. Underlying bone structure, which determines what support exists beneath the soft tissue. The position of the facial fat pads, which descend and deflate with age in a predictable pattern. Skin quality and thickness, which determines how much a given volume shows through. And which specific areas have lost volume, since restoring what was lost looks different from adding volume that was never there.
Which filler is best for cheeks?
The question is better framed as which properties are needed rather than which brand. Cheek and midface work generally calls for a firmer, more cohesive product that provides lift and holds its shape against gravity. Lips and fine lines call for something softer and more flexible that moves naturally. Most manufacturers make products across that range, so brand matters less than selecting the right consistency for the layer being treated.
Can filler change my face shape?
It can alter proportion, but it cannot change bone structure. Filler adds volume above the skeleton. Adding chin projection or midface support changes how proportions read, which can make a face appear longer or more tapered. But a wide jaw caused by bone remains wide, and only a masseter that is muscular rather than skeletal responds to neurotoxin.
Why do some filler results look obvious?
Most often because volume was placed where it was requested rather than where the face lost it. Filling a nasolabial fold directly, for example, treats a shadow whose cause is frequently midface descent — the fold softens but the face reads heavier. Overfilled appearances also develop cumulatively across years and multiple providers, with nobody tracking the total.
How many syringes will I need?
It depends on how much volume has been lost and across how many areas, not on face shape. A single area of moderate volume loss may need one syringe. Full-face structural work generally requires several, which is why facial balancing is priced and planned as a package rather than area by area.
Should I bring photos to my filler consultation?
Yes, but the most useful photos are of yourself five to ten years ago, not of someone else. Photos of another person show a result built on different bone structure and different fat distribution, and reproducing it on your face generally does not produce the same effect. Your own older photos show what your face actually looked like with the volume it has since lost.
Dr. Mortazavi assesses bone, fat compartments, and skin quality — and will tell you when filler isn't what your concern actually needs.
4667 MacArthur Blvd, Suite 310 — Newport Beach, CA 92660
(949) 568-7544 — info@plumpmedicalspa.com
Tuesday – Saturday, 10am – 6pm — By Appointment Only