When Filler Goes Wrong: A Dermatologist's Guide to Fixing It

Filler injections are considered generally safe and a low-risk procedure. But you should know who your injector is, how many injections they’ve done, and what their training credentials are. When filler does go wrong, the difference between a nuisance and an emergency is the person holding the syringe.

The real spectrum vs. the horror stories

The overwhelming majority of “filler gone wrong” is aesthetic dissatisfaction: overfilled, lumpy, or asymmetric results. Disappointing, but not dangerous, and mostly fixable or self-resolving. The genuine emergencies are rare. It’s worth keeping both truths in view: don’t panic over a lump, and don’t shrug off the warning signs below.

What settles on its own

Early lumps and unevenness are often just swelling and product settling. Give it two to four weeks before judging anything. Nodules that persist past that window are worth a return visit, and they can usually be dissolved.

The one real emergency: vascular occlusion

The most feared complication of fillers is a vascular occlusion. It occurs when filler enters a blood vessel, sets a blood vessel into vasospasm, or compresses a vessel enough to block blood flow. When blood can’t be delivered to the tissue, tissue can begin to die.

The signs, in the order we watch for them. Your injector should be watching the skin at all times when injecting for signs of how the skin is responding:

• Severe, immediate pain out of proportion to a needle poke. Slight discomfort during injection is normal; intense pain is not. This is usually the first sign that something has occurred in an artery.
• Blanching. The skin turns white or pale in the area because the blood supply is suddenly cut off.
• Slowed capillary refill. When we press the skin it turns white, and it should refill to pink within a few seconds. If it doesn’t, the vascular supply is compromised.
• A jagged, net-like bruising pattern. Not a round bruise, but an irregular pattern tracing the circulation of the occluded vessel, and it can be tender.
• If not treated quickly: skin necrosis, meaning death of the skin and an ulcer, and sometimes sterile pustules in the area.

How it’s treated. Most vascular occlusions can be treated effectively and blood flow restored. The toolkit: hot compresses, massage, and in some hands aspirin or nitroglycerin paste. But the most important thing is injecting hyaluronidase, the enzyme that melts filler away. It breaks down the filler in or around the vessel and allows proper blood flow to return. Pick an injector who is experienced with this product, can inject it effectively, and knows how to watch for the signs of reperfusion. Ultrasound is sometimes used, though it isn’t necessary if the injector knows their anatomy well and skin perfusion returns. If tissue damage did occur, hyperbaric oxygen treatment can also be used.

How it’s prevented:

• Most important: an experienced injector who knows anatomy really well
• Aspirating before injection
• Using a cannula, which decreases occlusion risk
• A slow, low-pressure injection technique with no big boluses
• And inexperienced injectors should avoid the high-risk areas: the glabella and the nose

What dissolving is actually like

For the non-emergency fixes (the overfilled, the lumpy, the migrated), dissolving is straightforward from the patient’s chair: a consult, hyaluronidase injections into the area, visible change within 24 to 48 hours, and sometimes a repeat session. Expect mild swelling the day of. For lips specifically, see my full guide to lip filler migration.

Who should fix a bad result

Look for someone who dissolves regularly, not occasionally, and can show correction before-and-afters, with physician-level backup for complications. The injector you trust to fix a problem is also the profile of injector who would have avoided it in the first place.

New to fillers? Start with our dermal fillers guide and my complete guide to Botox side effects.