After under eye filler, your main job is simple: protect the treated area, minimize swelling, and let the filler settle into place. Most of the critical aftercare happens in the first 48 hours, but the full settling process takes up to four weeks. Here’s what to do (and avoid) at each stage.
The First 24 Hours
Mild swelling, tenderness, and redness at the injection points are all normal immediately after treatment. You can apply a gentle cold compress to the area for comfort, but don’t press hard or massage the skin. Pressure can shift the filler out of position, and the under eye area is especially delicate.
Keep your hands away from the injection sites. It’s tempting to touch or check the area, but any rubbing risks displacing the product before it has a chance to integrate with the surrounding tissue. If you need pain relief, stick with acetaminophen (Tylenol). Avoid aspirin and ibuprofen, as both thin the blood and increase your chances of bruising.
Skip makeup for at least 24 hours. The tiny puncture sites from the needles need time to close, and applying products too soon raises the risk of irritation or infection. When you do return to makeup the next day, use gentle, fragrance-free formulas. Avoid waterproof or long-wear products early on because they require more aggressive removal, which means more rubbing around a sensitive area.
How to Sleep After Treatment
Sleep on your back with your head elevated on an extra pillow for at least the first week. This position does two things: it keeps fluid from pooling around your eyes (which would worsen swelling), and it prevents direct pressure on the filler while it settles. Surround yourself with pillows if you tend to roll onto your side during the night. The one position to absolutely avoid is face down, which puts sustained pressure right on the treated area and can cause the filler to shift or deform.
What to Avoid for 48 Hours
Anything that increases blood flow to your face can worsen swelling and bruising. For the first 24 to 48 hours, avoid:
- Strenuous exercise. Elevated heart rate pushes more blood to your face, amplifying swelling and raising the risk of bruising. Light walking is fine, but save the gym sessions for later.
- Alcohol. It dilates blood vessels and promotes fluid retention, both of which work against your recovery.
- Hot environments. Saunas, steam rooms, hot tubs, and prolonged sun exposure all generate heat that can accelerate the breakdown of hyaluronic acid filler. Heat also increases swelling.
- Facial treatments. Chemical peels, microneedling, laser resurfacing, and radiofrequency devices should all wait. Research on thermal treatments shows a 36% reduction in filler volume when heat-based devices are used immediately after injection. Waiting at least two weeks drops that loss to around 7%, so plan any other facial procedures accordingly.
Reducing Swelling and Bruising
Swelling peaks in the first one to two days and then gradually subsides. Cold compresses are your best tool during this window. Apply them gently, without pressing into the skin, for 10 to 15 minutes at a time. Some practitioners suggest topical arnica or bromelain (a compound from pineapple) to help bruises resolve faster, though the evidence for these is modest. They won’t hurt, but don’t expect dramatic results.
Bruising, if it occurs, typically fades within a week to ten days. The under eye skin is thin and has a rich blood supply, so some discoloration is common and not a sign that anything went wrong. Keeping your head elevated, avoiding blood thinners, and skipping alcohol all help minimize it.
When Results Actually Show Up
Don’t judge your results in the first few days. Swelling distorts the appearance of the filler, and most people look a bit overfilled or puffy early on. Within one to two weeks, as swelling resolves, you’ll start to see significant improvement in the under eye area. The filler continues to integrate with surrounding tissue and bind with water during this time, which is part of how hyaluronic acid works to restore volume.
Full results typically take up to four weeks to appear. The filler gradually settles into its final position, and the skin texture smooths out as the product becomes fully incorporated. If you’re unhappy with your results at the two-week mark, that’s a reasonable time to check in with your injector, but give it the full month before making any decisions about touch-ups.
Signs Something Is Wrong
Most side effects after under eye filler are mild and temporary. But there is one rare complication that requires immediate attention: vascular occlusion. This happens when filler inadvertently compresses or blocks a blood vessel, cutting off blood supply to the surrounding tissue.
The warning signs include intense pain that worsens rather than improves, skin that turns white (blanched) or bluish-purple, and a cool temperature in the affected area. These symptoms typically appear within hours of the injection, not days later. If you notice any combination of increasing pain, unusual skin color changes, or vision disturbances, contact your injector or go to an emergency room immediately. Vascular occlusion is treatable when caught early, but delays can lead to tissue damage.
Normal post-treatment symptoms, by contrast, involve mild tenderness, slight puffiness, and redness that steadily improve over the first few days. If your swelling is getting worse after day two or three rather than better, or if you develop a fever, that also warrants a call to your provider.
Returning to Your Normal Routine
Most people feel comfortable resuming daily activities the day after treatment. You can go back to work, apply light makeup after the 24-hour mark, and carry on with your usual skincare routine using gentle products. Avoid active ingredients like retinoids or exfoliating acids directly on the treated area for a few days, as they can increase sensitivity.
Exercise can typically resume after 48 hours, starting with moderate activity and building back to high-intensity workouts over the following days. If you have facial treatments like radiofrequency, microneedling, or laser procedures on your calendar, push them out at least two weeks to protect your filler investment. Research shows that waiting two weeks or more before heat-based treatments preserves filler integrity almost entirely, while doing them too soon can cause meaningful volume loss.