Who can get dermal fillers: the right question is a different one

The question "who can get dermal fillers" has two readings, and both matter: who can receive them and who can inject them. The second is the one that has hurt the most people in recent years, and it is the one almost nobody types.

I will answer both, and I will give away the conclusion up front: the list of people who cannot receive filler is short and fairly predictable. The list of what separates a good case from a bad one is much longer — and almost nothing on it has to do with the patient's body.

Which practitioners can inject dermal fillers

In Brazil, hyaluronic acid facial filler is within the scope of three professions, each within its own limits:

• Physicians, with training in injectable procedures;
• Dentists, with a specialization in Orofacial Harmonization, regulated by the CFO, Brazil's Federal Council of Dentistry;
• Aesthetic biomedical scientists, within the areas and qualifications their professional council defines.

What that list does not say — and should — is that the license is the floor, not the standard. Being registered authorizes; it does not qualify. And there is a huge gray zone of people injecting with none of the three, in beauty salons, in people's homes, after a weekend course. When this makes the news, it almost always comes from there.

Two things to check before you lie down in the chair, and neither is awkward to ask about:

• Active registration with the profession's council, with the specialization declared. It is a public lookup and takes a minute.
• The product is registered with Anvisa, the Brazilian health regulator, and the box is opened in front of you. Filler without traceability is the source of a large share of serious complications.

Worth adding: the FDA has issued a specific warning against "needle-free" filler devices — the pressure pens sold online. They are not approved, and the injuries they cause are unpredictable because no one controls where the product ends up.

The limits of a dentist's scope

A qualified dentist injects the middle and lower thirds of the face and the perioral area — lips, nasolabial folds, chin, jawline, tear troughs, temples and the nose, within what the CFO regulation establishes.

I say this because the question comes up every week, and because a practitioner who agrees to do what is outside their scope has already answered the most important question about themselves.

Who can receive dermal fillers

The honest answer: most healthy adults with a real concern and an achievable expectation. Hyaluronic acid filler is one of the injectable procedures with the best safety margin there is — as long as the product is registered, the technique is good and the plan comes from an assessment, not a menu.

The good candidate, in practice:

• Has a structural concern, not a skin concern. Volume loss, a deep fold, an undefined contour, projection that has faded. If the concern is texture, spots or sagging, filler is not the answer — and pushing it anyway is the most common path to a face that looks "full" without looking better.
• Is in stable general health with no active infection.
• Arrives with expectations formed by faces, not photos. This is the most decisive filter and the least objective one.

Age is not a criterion in itself. There is no magic minimum age, and there are a lot of faces in their early twenties being filled for reasons that are not structural. There is no maximum age either: the question is always whether filler solves that concern on that face.

Dermal filler contraindications

These are absolute — no injection, period:

• Active infection in the area, of any kind. A cold sore outbreak, folliculitis, inflamed acne at the site. A needle in infected tissue spreads the infection.
• Known allergy to any component of the product, or to lidocaine when the filler contains it.
• Active autoimmune disease, with the condition uncontrolled.
• Pregnancy and breastfeeding.
• Unrealistic expectations, or a request that doesn't match the face. This is not a medical contraindication; it is a clinical one, and it weighs just as much.

And these call for caution, individual assessment and sometimes simply waiting:

• Anticoagulant or antiplatelet medication — it does not rule out treatment, but it raises the risk of bruising considerably, and the approach is agreed with whoever prescribed it. No one stops a medication for aesthetic reasons without talking to whoever prescribed it.
• A tendency toward keloids or hypertrophic scarring.
• Recent dental work or facial surgery, because of the risk of bacteremia and contamination of the implanted product. The reverse also holds: after filler, put off the dentist for a few weeks.
• Previous filler with an unknown or permanent product. This is the case that worries me most, and I come back to it below.

Can people with autoimmune disease get fillers?

It depends on the state of the disease, not the diagnosis.

Autoimmune disease in an active phase — a flare, an uncontrolled condition, heavy immunosuppression — rules it out. The body is already reacting against itself; introducing an implant at that moment adds a variable to an unstable system, and the complications literature records late inflammatory reactions associated with states of immune activation.

Autoimmune disease that is controlled, stable and monitored usually allows it, on two conditions: clearance from whoever treats the disease, and a hyaluronic acid product, which is resorbable and reversible with hyaluronidase. This is not something an aesthetic practice should settle on its own — it is a conversation between us and the rheumatologist, or whichever specialist follows the patient.

Worth saying: any acute infection or inflammation, however minor, means waiting. A bad flu, a dental infection, a recent vaccine. It is not dogma. It is timing.

Can people with thrombophilia get facial balancing?

Thrombophilia is a clotting disorder with an increased risk of thrombosis. It is not an absolute contraindication to filler, and the reason is that the mechanism behind a filler vascular event is different — there the problem is compression of a vessel or the product entering it, not spontaneous clot formation.

What thrombophilia changes is everything around it:

• The person is almost always on an anticoagulant, and that raises the bruising risk considerably;
• The approach has to be agreed with the hematologist;
• Vascular assessment before injecting stops being good sense and becomes a requirement.

Which is exactly where the next point comes in.

What we do before injecting

At RUV, Doppler ultrasound assessment is part of the procedure, not an optional extra or a brochure selling point. And it exists for two concrete reasons:

Before, to see the structure of that particular face — where the vessels run in that person, not where the atlas says they should. Facial vascular anatomy varies between individuals, and the average map protects no one. Doppler also identifies filler material from previous treatments, and that changes the plan entirely. Someone who has had filler and doesn't know what, where or how much — a common situation — stops being a blind case.

After, to confirm there is no compression of a vessel or artery. It is the difference between saying "it went well" and verifying that it went well.

This does not eliminate risk. Nothing eliminates risk. But it turns "it's safe" from a promise into something checked, and it is what allows me to take on cases that need a wider margin — the face with old filler of unknown origin, the patient with a vascular concern, the correction of someone else's work.

When we advise against it

The method here is to analyze the whole face before treating the concern. The concern points to the symptom; the plan starts from the structure. And it is by looking at the whole face that the cases where the answer is no show up:

• When the request is for a change of identity. Arriving with a photo of someone else is not a brief. It is an expectation no product delivers.
• When the concern is sagging and the request is volume. Filling a sagging face makes the sagging face worse. The plan there is different — energy devices, collagen, structure — and sometimes it doesn't involve a syringe at all.
• When the face is already at its volume limit. There is a point where more product only adds weight, and people rarely see that point in themselves. Saying so is part of the job.
• When there is active infection, uncontrolled autoimmune disease, pregnancy or breastfeeding. An elective procedure waits.
• When the case is surgical. Some concerns are disguised by filler and solved by surgery. We refer to a partner surgeon at the assessment, not after three sessions. The best procedure is sometimes the one we don't do.
• When the person wants an immediate result for an event that same week. Swelling and bruising are possible and unpredictable. Book with room to spare, or don't book.

Frequently asked questions

Can you get facial fillers while pregnant?

No. Not because there is evidence of harm — there are no studies in pregnant women, and there won't be, for obvious ethical reasons. It is precisely the absence of data that closes the door: an elective procedure, an aesthetic benefit, an unknown risk. The math doesn't work. The same applies to breastfeeding, by the same logic.

Can people with sinusitis get hyaluronic acid filler?

Chronic sinusitis that is controlled and not flaring does not rule it out. A sinusitis flare means waiting, like any active infection — all the more so in an area close to where the mid-face is injected.

Can people with cold sores get lip filler?

Yes, outside an outbreak. A history of recurrent herpes calls for antiviral prophylaxis arranged before the procedure, because the needle can trigger an outbreak. With an active lesion, there is no injection.

Had filler before and don't know which product was used — can you get it again?

Yes, but not blindly. This is exactly the case where ultrasound beforehand stops being a precaution and becomes a necessity: old product changes the plan, changes the depth and changes what can be promised. Permanent product — the ones that are not hyaluronic acid and don't resorb — is a different conversation, longer and more conservative.

What is the safest filler?

Hyaluronic acid, because of the property that matters most: it is resorbable and reversible with hyaluronidase. If something didn't turn out well, or if there is a vascular complication, there is a plan B. Permanent filler has no plan B — what went in stays in, and correction means surgery.

Does filler age the face over time?

Not by itself. What ages the face is accumulated excess: always adding a little more, session after session, without ever reassessing the whole. The face grows heavy and the person doesn't notice, because the change is slow and they see themselves every day. It is the strongest argument for injecting less and coming back later.

What goes into the cost of filler?

Three things: the product — a registered, traceable brand, with an invoice; the training of whoever injects; and the setup, which includes what is done before and after, such as the ultrasound assessment. A price far below market is usually saving on one of those three, and none of the three is a good place to save.