How Long Does Filler Last? Aftercare, Lumps and Warning Signs After Dermal Filler

What to do and avoid after filler

Two hyaluronic acid filler labels from the same maker advise avoiding strenuous exercise and strong sun or heat for the first 24 hours, because they can cause redness, swelling or itching [2][3].

There is no single list of dos and don'ts for every brand. The items below come from those two labels and from an expert group's proposals. Follow the written instructions from the doctor who injected you first. The expert group advises that patients receive written aftercare instructions with contact numbers [7]. For the full overview of fillers, see [[what-is-filler]].

• First 24 hours: avoid strenuous exercise and long exposure to sun or heat, which can cause redness, swelling or itching [2][3].
• One label adds avoiding alcoholic drinks in the first 24 hours [3].
• If the area is swollen, one label says an ice pack may be applied for a short time [2].
• Laser, chemical peels or other procedures that rely on the skin's active response: the label warns of a possible inflammatory reaction at the implant site, both when done after filler and when filler is injected before the skin has fully healed from such a procedure [3].
• Dental work and hygienist visits: the US FDA says inflammation near the injection site may develop after viral or bacterial illness or infection, vaccinations, or dental procedures [1], and an expert group proposes avoiding dental work for 2 to 4 weeks before and after filler, to reduce the chance of bacteria entering the blood and forming biofilm [7].
• Medicines and substances that prolong bleeding, such as aspirin, NSAIDs and warfarin, may mean more bruising or bleeding [2]. Ask the doctor before stopping any medicine, and do not stop it on your own.

How long swelling and bruising last after filler

One hyaluronic acid filler label says most injection-site reactions resolve within 3 days to 4 weeks, and there is no middle figure for every brand [2]. The same label says reactions usually resolve within 3 days at the temple and in 2 to 4 weeks in the cheek and chin [2].

The table comes from the diaries of 265 participants in the cheek trial behind that label. It is data for one brand and one site [2].

In the published report of the same trial (designed and funded by the maker), among people who had the symptom, swelling resolved within 2 weeks in 91.6% and lumps within 2 weeks in 66.0% [5]. A pooled analysis of hyaluronic acid filler trials found swelling the most common effect, and its authors say swelling should settle within a few days; if it persists, contact a health professional, because that is not a normal reaction [6].

Why filler lumps form and whether they go away

Early lumps are common, some last beyond 30 days, and some appear months after injection, so the injecting doctor should assess them [2][4]. In the diaries of the cheek trial behind one brand's label, 81.1% reported lumps, and 15.8% of those with lumps had them for more than 30 days [2]. Thai FDA also lists lumps at the injection site as a possible effect of filler [8].

An expert consensus separates two kinds. Early lumps appear within days or weeks, are generally painless, and mostly come from technique, such as too much filler, placement that is too superficial, or the wrong product for the area [4]. Early lumps may respond to massage, but massage as treatment is the doctor's decision; do not massage or press on your own without advice [4].

Delayed-onset nodules (from 4 weeks to 1 year or even longer) are usually an inflammatory reaction to the filler, or infection-related, including biofilm [4]. In the cheek trial behind the same label, two participants developed lumps or nodularity about 7 months after injection, were treated with medicines and hyaluronidase, and recovered [2].

The experts' approach is to observe if inflammation is improving. If a non-inflammatory lump persists, the doctor may use needle aspiration, a minimal stab incision to evacuate it, or hyaluronidase for hyaluronic acid filler [4]. But the US FDA says removing filler may be difficult or impossible, especially permanent fillers and those not made of hyaluronic acid [1].

A pooled analysis puts lumps at 9.4%, but the confidence interval is very wide (2.6 to 28.8) because the studies differ [6], so do not treat it as a middle figure. For lumps under the eye, see also [[under-eye-filler-questions]].

How long does filler last

There is no standard figure, because the US FDA says how long results last depends on the filler and the injection site, and some fillers are absorbed over time, so repeat treatment may be needed [1].

As a label example, in the cheek trial for one hyaluronic acid filler, the share of people still improved by at least one grade on a midface volume scale was 85.2% at month 12, 71.5% at month 18 and 67.1% at month 24 [2]. These figures include touch-up treatment as the trial protocol allowed [2]. Another report measured differently and found 92.8% rated their cheek volume as improved at 6 months and 79.0% at 2 years [5].

In the lips, another brand's label (Ultra XC) reports 80.5% improved by at least one grade at month 6, 63.6% at month 9 and 56.4% at month 12 [3]. So figures differ by area and brand, and the makers ran these studies [5].

At the other end, hyaluronic acid filler placed too superficially can give the skin a bluish-gray tint (Tyndall effect), and it has been reported to last for years if untreated [4]. So how long it lasts does not tell you whether a filler is good. Ask your doctor how many months of follow-up the label of the product used has, and what was measured. For nasolabial fold and cheek filler specifically, see [[nasolabial-cheek-filler]].

What filler migration is and whether it happens

The US FDA lists filler migration as an uncommon side effect, and there is no standard figure for how often it happens [1]. The FDA places migration, leakage or rupture of filler in its list of uncommon side effects [1].

An expert consensus lists migration of filler material in its table of adverse events without further detail [4]. One filler label lists device migration among postmarket reports, not among events seen in the studies used for approval [2]. Another expert group classes displacement as a late-onset event [7].

In everyday speech, filler moving can mean several things, such as a lump that has shifted, too much filler, or swelling that stays. This article cites only what sources call migration. If your face changes shape or you see a lump that has moved, go back to the doctor who injected you.

Which signs after filler mean see a doctor at once

Unusual pain, vision changes, or skin near the injection turning white, gray or blue are signs the US FDA says need immediate medical attention [1]. Thai FDA also advises seeing a doctor straight away if anything abnormal appears after filler [9].

The reason for urgency is that filler entering a blood vessel can block it. The consensus says the two main symptoms are pain and skin color change, and arterial occlusion typically brings immediate, severe pain out of proportion, with color change [4]. Another expert group says color change may be remote from the injection point and, although usually immediate, has been reported to be delayed up to 24 hours [7]. The same group says that for the eye, the time frame for saving vision is 90 minutes at most [7].

• Unusual pain, or pain worse than expected [1][4]
• Skin near the injection turning white, gray, blue or mottled, which can be away from the injection point [1][7]
• Vision changes, blurred or lost vision, or eye pain: see an eye specialist urgently [1][4]
• Stroke-like signs such as trouble speaking, numbness or weakness in the face or limbs, trouble walking, severe headache, dizziness or confusion [1]
• Swelling that does not settle within a few days: contact the health professional who injected you [6]
• Other serious reactions, such as severe allergy, tissue death, infection, or skin at the injection site turning paler or darker than expected [1][8][9]