Lip filler aftercare: a complete guide

The short version

Swelling peaks at 24 to 48 hours and resolves substantially by day 5. Bruising, if present, typically fades within 7 to 10 days. Your final result is not visible until the two-week mark. During the first 48 hours, avoid heat, alcohol, strenuous exercise, and pressure on the lips. Do not massage unless specifically instructed. If you experience rapid swelling, difficulty breathing, or skin blanching, contact your practitioner immediately — these are rare but require prompt attention.

The first 48 hours: what is normal

The immediate post-treatment period is when your lips will look most unlike themselves. I tell every client: the lips you see in the mirror tonight are not the lips you are keeping. Swelling from the injection process, combined with the hydrophilic nature of hyaluronic acid (it draws water to itself), means your lips may appear 30 to 50 percent larger than your intended result.

Within the first 2 to 4 hours, you may notice increasing tightness and fullness. This is normal. The local anaesthetic in the filler will wear off after approximately 1 to 2 hours, and you may become more aware of tenderness at the injection sites. Small lumps or unevenness are common at this stage — the filler has not yet integrated with your tissue.

By 12 to 24 hours, swelling typically reaches its peak. One side may swell more than the other; this asymmetry is temporary and relates to your individual lymphatic drainage rather than a problem with placement. Bruising, if it occurs, usually becomes visible during this window. Not everyone bruises — in my clinic, roughly 40 percent of lip filler clients experience some bruising, ranging from a faint yellow shadow to a more noticeable purple mark.

At the 48-hour mark, most clients notice the swelling beginning to subside. Your lips will still feel firm and may look slightly uneven. This is expected. The filler needs time to soften and settle into its final position.

The lip filler swelling timeline

Understanding the typical progression helps manage expectations. Every person is different, but this timeline reflects what I see most frequently:

• · Hours 0 to 4: Mild swelling begins, lips feel numb from anaesthetic, injection sites may show small raised dots.
• · Hours 4 to 12: Swelling increases noticeably, tightness intensifies, tenderness develops as anaesthetic wears off.
• · Hours 12 to 48: Peak swelling. Lips may look significantly larger than intended. Bruising becomes visible if present.
• · Days 3 to 5: Swelling reduces by approximately 50 percent. Lips begin to feel softer. Asymmetry starts to even out.
• · Days 5 to 7: Most swelling resolved. Bruising fading. Filler beginning to integrate with tissue.
• · Days 7 to 14: Final settling period. Minor residual firmness softens. Shape stabilises.
• · Day 14 onwards: True result visible. This is when I schedule review appointments.

If you have an event or occasion, I recommend scheduling your lip filler treatment at least 3 weeks beforehand. This allows for the full settling period plus a buffer for any touch-up if needed.

What to do after lip filler: Bernadette's checklist

I provide every client with written aftercare instructions, but the essentials are straightforward:

• · Apply a cool compress for 10 to 15 minutes at a time during the first 24 hours. Wrap ice in a clean cloth — never apply ice directly to skin. This helps reduce swelling but will not eliminate it entirely.
• · Sleep elevated for the first 1 to 2 nights if possible. An extra pillow reduces fluid pooling in the face overnight.
• · Stay hydrated. Hyaluronic acid binds to water, and adequate hydration supports optimal filler integration.
• · Use a gentle lip balm to keep the lips moisturised. Dry, cracked lips can feel more uncomfortable post-treatment.
• · Take paracetamol if needed for discomfort. Avoid ibuprofen and aspirin for the first 24 hours as these can increase bruising risk.
• · Eat soft foods for the first day if your lips feel tender. Avoid anything that requires wide mouth opening or significant chewing pressure.
• · Keep the area clean. You can wash your face normally, but avoid rubbing or pressing on the lips.

These are simple measures. The filler does most of the work itself — your job is mainly to avoid interfering with the settling process.

What to avoid after lip filler

The restrictions exist for good reason. Heat, alcohol, and increased blood flow can all worsen swelling and bruising. Pressure on the lips can displace filler before it has integrated.

• · Avoid alcohol for 24 to 48 hours. Alcohol dilates blood vessels and increases bruising risk.
• · Avoid strenuous exercise for 24 to 48 hours. Elevated heart rate and blood pressure can worsen swelling.
• · Avoid saunas, steam rooms, and hot baths for 48 hours. Heat exacerbates swelling.
• · Avoid flying for 48 hours if possible. Cabin pressure changes can affect swelling, though this is more precautionary than critical.
• · Avoid kissing or significant pressure on the lips for 48 hours. The filler needs time to settle in position.
• · Avoid dental work for 2 weeks. The stretching and pressure involved can affect filler placement.
• · Do not massage your lips unless your practitioner has specifically instructed you to do so. Massage can move filler to unintended areas.
• · Avoid makeup on the lips for 24 hours to reduce infection risk at injection sites.

After the initial 48-hour period, most normal activities can resume. I advise waiting the full two weeks before assessing your result or deciding whether you want any adjustment.

When to worry: signs that need attention

Serious complications from lip filler are rare when treatment is performed by a properly trained practitioner using appropriate products and techniques. However, you should know what to look for.

Contact your practitioner promptly if you experience any of the following:

• · Skin blanching or white patches — this can indicate compromised blood supply and requires immediate attention.
• · Severe pain that is disproportionate to what you were told to expect, particularly if accompanied by colour changes.
• · Rapidly increasing swelling after the initial 48-hour peak, especially if one-sided or accompanied by warmth.
• · Signs of infection — increasing redness, warmth, pus, or fever developing after day 2 or 3.
• · Difficulty breathing or swallowing — extremely rare but requires emergency medical attention.
• · Darkening or dusky discolouration of the lip tissue.

The most serious potential complication is vascular occlusion — where filler inadvertently blocks a blood vessel. This is why I always have hyaluronidase (the enzyme that dissolves hyaluronic acid filler) available in clinic. It is also why choosing a practitioner with proper medical training matters. They need to recognise complications early and act quickly.

A note on practitioner choice and the changing regulatory landscape

The UK government confirmed in August 2025 that lip fillers will come under a new local authority licensing system, requiring practitioners to meet rigorous standards for training, insurance, and premises safety. This regulatory change, expected to take effect in 2026, reflects what many of us in the medical aesthetics field have advocated for years.

Until then, the industry remains largely unregulated. Anyone can technically inject filler after a short course. This is why aftercare quality varies so dramatically — some clients are sent home with comprehensive instructions and 24-hour contact details, while others receive nothing.

When choosing a practitioner, verify they are registered with a professional body such as the NMC (for nurses), GMC (for doctors), or GDC (for dentists). Check whether they are listed on the Save Face or JCCP registers. Ask whether they have hyaluronidase on site and what their emergency protocol involves. These are not unreasonable questions — any reputable practitioner will answer them readily.

The two-week review

I schedule reviews at 14 days post-treatment. By this point, the swelling has fully resolved, the filler has integrated with your tissue, and we can see your true result. If you are happy, no further action is needed. If you feel you would like a little more volume, we can discuss a small top-up. If there is any asymmetry or a small lump, we can address it.

Hyaluronic acid fillers are fully reversible with hyaluronidase, which gives us a safety net. If at any point you decide you want less volume or wish to return to your natural lip shape, that option exists. This reversibility is one of the reasons I work exclusively with HA-based products in my dermal filler treatments.

A short safety note

Lip filler, when performed correctly with appropriate products, is a safe and well-established treatment. Millions of procedures are carried out each year in the UK. However, no injectable treatment is without risk, and outcomes depend significantly on practitioner skill and patient compliance with aftercare.

I cannot provide medical advice through a blog post, and this guide does not replace the specific aftercare instructions given by your treating practitioner. If you have concerns about your healing, always contact the clinic that performed your treatment first. If you cannot reach them and you are worried, seek medical advice.

For clients I see at Visage Aesthetics, my mobile number is provided at every appointment. I would rather receive a message about something that turns out to be normal than miss something that needs attention.

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