You’ve probably heard the name in a beauty clinic, seen it mentioned on social media, or perhaps a friend brought it up after a procedure. PMMA has become one of the most talked-about substances in aesthetic medicine — and also one of the most misunderstood.
Some people swear by the results. Others have faced serious, life-altering complications. The difference, more often than not, comes down to one thing: information.
This article gives you the complete, honest picture — what PMMA is, what it’s used for, how the procedure works, and what the risks really are. No sales pitch. No scaremongering. Just the facts you deserve to have before making any decision.
Considering PMMA? Read This Before You Book Your Appointment
You’ve probably heard the name in a beauty clinic, seen it mentioned on social media, or perhaps a friend brought it up after a procedure. PMMA has become one of the most talked-about substances in aesthetic medicine — and also one of the most misunderstood.
Some people swear by the results. Others have faced serious, life-altering complications. The difference, more often than not, comes down to one thing: information.
This article gives you the complete, honest picture — what PMMA is, what it’s used for, how the procedure works, and what the risks really are. No sales pitch. No scaremongering. Just the facts you deserve to have before making any decision.
What Is PMMA?
PMMA stands for polymethylmethacrylate — a synthetic material that has been used in medicine since the 1930s. In its original form, it appeared in hard contact lenses, dental prosthetics, bone cement used in orthopedic surgeries, and intraocular lenses for cataract patients.
In aesthetic medicine, PMMA takes a very different form: tiny microspheres — between 30 and 42 micrometers in diameter — suspended in a carrier gel, typically composed of collagen or saline solution. When injected into the body, the carrier gel is gradually absorbed, while the PMMA microspheres remain permanently in place.
This is the defining characteristic of PMMA that separates it from most other fillers: it is permanent. Hyaluronic acid dissolves over months. PMMA does not.
What Is PMMA Used For?
In aesthetic medicine, PMMA is used primarily for body and facial volumization. The most common applications include:
Gluteal augmentation (buttocks) — one of the most popular uses in Brazil and Latin America, where PMMA is injected to increase volume and improve contour without implant surgery.
Facial rejuvenation — filling deep wrinkles, nasolabial folds, and areas of volume loss associated with aging.
Lip augmentation — adding definition and volume to the lips.
Body contouring — correcting asymmetries in the calves, biceps, and other areas.
HIV-related facial lipoatrophy — one of PMMA’s most clinically validated uses, where it restores volume lost due to antiretroviral therapy.
In several countries, including Brazil, certain PMMA-based products are approved by health regulatory agencies (such as ANVISA) for specific aesthetic uses. However, regulatory approval varies significantly by country, and not all PMMA products on the market carry the same level of oversight.
How Is PMMA Applied?
The procedure is performed by a licensed healthcare professional — ideally a plastic surgeon or dermatologist with specific training in the use of permanent fillers.
Here is a general overview of what the process looks like:
1. Consultation and assessment
The professional evaluates the patient’s health history, skin condition, expectations, and suitability for the procedure. Contraindications are discussed at this stage.
2. Preparation
The treatment area is cleaned and a local anesthetic is applied to minimize discomfort.
3. Injection
PMMA is injected using a fine needle or cannula into the subcutaneous tissue — the layer between the skin and muscle. The technique varies depending on the area being treated. For larger areas like the buttocks, multiple injection points and larger volumes are used.
4. Post-procedure
Light massage is typically applied to distribute the product evenly. The patient is given aftercare instructions, which usually include avoiding pressure on the area, strenuous exercise, and sun exposure for a defined period.
The results are visible immediately but evolve over several weeks as the carrier gel is absorbed and the body builds a fibrous capsule around the microspheres — which is part of what creates the lasting volume effect.
The Risks of PMMA — What You Need to Know
This is the section that most clinics gloss over. It deserves your full attention.
Because PMMA is permanent, any complication is also potentially permanent. This is fundamentally different from complications with absorbable fillers, which often resolve on their own as the product breaks down.
Granulomas
The most feared and well-documented complication. A granuloma is an inflammatory reaction in which the body’s immune system attacks the PMMA microspheres as foreign bodies. Granulomas can appear months or even years after the procedure and present as hard, painful nodules under the skin. They are notoriously difficult to treat and can require surgical removal.
Migration
Over time, and particularly with physical activity, heat, or trauma, PMMA can migrate from the original injection site to adjacent areas, causing asymmetry, lumps, or disfigurement.
Infection
As with any injectable procedure, there is a risk of bacterial infection. In the case of PMMA, infections can be severe and difficult to treat because the microspheres create a surface where bacteria can shelter from antibiotics — a phenomenon known as biofilm formation.
Necrosis
If PMMA is accidentally injected into or near a blood vessel, it can block circulation and cause tissue death (necrosis). This is rare but represents one of the most serious possible complications.
Irreversibility
Unlike hyaluronic acid — which can be dissolved with an enzyme called hyaluronidase — there is no reliable method to remove PMMA once it has integrated into the tissue. Surgical removal is possible in some cases but carries its own significant risks and rarely results in complete extraction.
Who Should Not Get PMMA?
PMMA is not appropriate for everyone. Absolute and relative contraindications include:
- Active skin infections or inflammation in the treatment area
- Autoimmune diseases (lupus, rheumatoid arthritis, etc.)
- History of keloid formation or abnormal scarring
- Blood clotting disorders or use of anticoagulant medications
- Pregnancy or breastfeeding
- Unrealistic expectations about results or recovery
- Previous allergic reactions to any component of the product
A thorough pre-procedure consultation with a qualified professional is not optional — it is essential.
What to Ask Before You Say Yes
If you are considering PMMA, these are the questions you should ask your provider before agreeing to anything:
- Is this product approved by the health regulatory agency in my country?
- What is your specific training and experience with PMMA?
- What happens if I develop a complication — what is the treatment plan?
- How much product will be used, and in how many sessions?
- What are the long-term outcomes for patients who had this procedure with you?
A provider who is evasive, dismissive, or rushed when answering these questions is a red flag.
The Bottom Line
PMMA is a legitimate medical material with a long history in clinical use. In the right hands, with the right patient, in the right context, it can produce results that other fillers cannot achieve. That is real.
But permanence cuts both ways. The same quality that makes PMMA appealing — the fact that it lasts — also means that complications last too. This is not a decision to make based on a promotional offer or a before-and-after photo on Instagram.
Talk to a qualified professional. Ask hard questions. Take your time. Your body deserves nothing less.
This article is intended for informational purposes only and does not constitute medical advice. Consult a licensed healthcare professional before undergoing any aesthetic procedure.
