Lip filler aftercare: what to do and avoid in the first 48 hours

TL;DR

• Swelling and mild bruising are normal after lip filler and usually peak within the first 48 hours, then settle over a week or two.
• In the first 48 hours: use a cold compress, sleep with your head raised, drink plenty of water and keep your hands off your lips.
• Avoid heat (saunas, hot drinks, intense exercise), alcohol, salty food, lip makeup and drinking through a straw.
• The settled, final result is usually clear at about 2 weeks, not on day one.
• Tell your clinician beforehand if you get cold sores, and call the clinic straight away if you have severe pain, blanching or skin that turns dusky.

Lip filler aftercare is mostly about the first two days. How your lips look in a month depends a lot on what you do, and what you avoid, in the 48 hours straight after your appointment. Most of the early swelling, bruising and settling happens inside that short window.

This guide covers what to do, what to avoid, and the honest day-by-day timeline of how lip filler settles. It also covers the warning signs that need a phone call, not a wait-and-see. Lip filler here means a hyaluronic acid filler, the gel most clinics use to add shape and volume to the lips.

Why do the first 48 hours of lip filler aftercare matter?

The first 48 hours matter because that is when swelling peaks, when bruising forms, and when the filler is settling into place. What you do in this window can make the difference between a smooth recovery and avoidable swelling, bruising or infection.

Hyaluronic acid attracts water, so the gel pulls in moisture and your lips look fuller and puffier than the final result for a few days. That is expected. Heat, alcohol and hard exercise all raise blood flow to the area, which can make that early swelling and bruising worse. Keeping things calm and cool gives your lips the best start.

The good news is that the rules are simple, and none of them are difficult. Most of lip filler aftercare is about doing less, not more.

Your first 48 hours: what to do

A short, practical list covers almost everything that helps in the first two days.

• Use a cold compress. Hold a clean, wrapped ice pack or a cold spoon gently against your lips for 10 to 15 minutes at a time in the first 24 to 48 hours. Do not press hard. Cooling helps with swelling and comfort.
• Sleep with your head raised. Use an extra pillow for the first one to two nights. Keeping your head above your heart reduces fluid pooling in your lips overnight.
• Drink plenty of water. Staying hydrated supports healing. Sip from the glass rather than gulping.
• Eat soft, cool food. Choose food you do not have to bite into hard for the first day, and let hot food cool before eating.
• Be gentle. Dab, do not rub. Let your lips do the healing without help.
• Take paracetamol if you need it. If you want pain relief, paracetamol is usually the gentler choice. Some other painkillers can thin the blood slightly and add to bruising, so check with your clinician or pharmacist first.

If you bruise easily, a little arnica can help some people, though the evidence is mixed. The cold compress and the elevated sleep position do most of the work.

What to avoid after lip filler in the first 48 hours

The list of things to avoid after lip filler is short, and every item on it is there to lower swelling, bruising or infection risk.

• Heat. No saunas, steam rooms, sunbeds, very hot showers or hot drinks for 48 hours. Heat widens blood vessels and makes swelling more obvious.
• Strenuous exercise. Skip the gym, running and hot yoga for 24 to 48 hours. Raised blood pressure and heart rate can worsen lip filler swelling and bruising.
• Alcohol. Alcohol thins the blood and widens vessels, which adds to bruising. Leave it for at least 24 hours.
• Makeup on the lips. Hold off on lipstick, lip liner and gloss for about 24 hours so the tiny injection points can close without picking up bacteria.
• Straws, smoking and vaping. The pursing and suction action puts pressure on healing lips. Sip from a glass and pause smoking and vaping where you can.
• Pressing, massaging or “fixing” your lips. Unless your clinician has shown you a specific massage, leave the filler alone. Pressing can move product before it has settled.
• Flights and dental work, if you can wait. Where possible, leave a clear gap around big dental appointments and long-haul flights in the first week.

A useful way to think about it: anything that gets your blood pumping, heats your face, or touches your lips can wait a day or two. The FDA’s do’s and don’ts also warns against buying filler online or having it injected by anyone who is not properly trained.

Is swelling and bruising after lip filler normal?

Yes. Swelling, tenderness and some bruising are the most common and most expected reactions to lip filler, and they almost always settle on their own.

In a meta-analysis of hyaluronic acid lip augmentation, the most frequent reactions were tenderness, injection-site swelling and bruising, and these resolved without treatment within a few weeks. The lips are a mobile, vascular area with very little fat, so a needle passing near tiny blood vessels can cause a bruise even in expert hands. That is normal, not a sign anything has gone wrong.

Swelling is usually at its worst on the day of treatment and the morning after. Postmarket studies of lip fillers report that these injection-related effects are short-lived. If your lips feel firm, uneven or lumpy in the first week, that is often just swelling and settling rather than the final shape.

How long does lip filler swelling take to settle?

Lip filler swelling usually peaks within the first 48 hours, eases noticeably by day three, and mostly resolves within one to two weeks. The settled, final result is best judged at around two weeks.

Here is the honest, general timeline most patients follow:

• Day 0 to 2: Lips look swollen and feel tender. They may look bigger or less even than you expected. Bruising can appear.
• Day 3 to 4: Swelling starts to drop and any bruising begins to fade or yellow.
• Day 5 to 7: Most of the obvious swelling has gone. Lips look much closer to the intended result.
• Week 2: Filler has settled and softened. This is the point to judge shape, balance and whether you want anything reviewed.

Because so much changes in these two weeks, it is worth booking any important event well clear of your appointment. If you want to understand how long the result itself lasts once settled, read our guide on how long fillers last.

When can you exercise, drink alcohol or wear makeup again?

As a general rule: light activity and makeup are fine after about 24 hours, while hard exercise, alcohol and heat are best left for 48 hours.

• Exercise: Gentle walking is fine straight away. Leave running, weights, hot yoga and anything that makes you sweat or flush for 24 to 48 hours.
• Alcohol: Wait at least 24 hours, and longer if you bruised.
• Lip makeup: Wait about 24 hours so the injection points have closed.
• Saunas, steam and sunbeds: Leave heat treatments for at least 48 hours.

These are sensible defaults, not strict medical rules for every person. Your clinician may adjust them based on how much filler you had, where, and how you reacted. The plan they give you in writing always takes priority over a general guide.

Can lip filler trigger a cold sore?

Yes, lip filler can trigger a cold sore in people who already carry the cold-sore virus, because the needle and the swelling can reactivate it. This is why your medical history matters before treatment.

The virus that causes cold sores sits dormant and can be woken by needle trauma and tissue handling during lip treatment. If you are prone to cold sores, tell your clinician at the consultation. Published cosmetic guidance recommends a course of antiviral tablets starting before the appointment and continuing for a few days after, to lower the chance of a flare. We will not treat over an active cold sore, and we will reschedule if one appears.

This is a question for your clinician, not for self-medication. We will agree the right plan with you before your appointment.

What are the warning signs that need a phone call?

Most reactions are mild and settle on their own, but a few signs need prompt contact with your clinic rather than a wait-and-see approach.

Call your clinic straight away if you notice:

• Severe or increasing pain that is out of proportion to the treatment.
• Blanching: patches of skin around the lips that turn white, then look dusky, grey or blue.
• Skin that feels cold, mottled or develops a blistered or sore pattern.
• Signs of infection: spreading redness, heat, pus or a fever after the first day or two.
• Sudden vision changes alongside any of the above.

These can be signs of a rare but serious complication such as vascular occlusion, where filler affects a blood vessel, or an infection or inflammatory reaction. They are uncommon, but they are time-sensitive, so the safe move is always to contact the clinic that treated you without delay. If you cannot reach them and you are worried, seek urgent medical care. This is general safety information, not a diagnosis, and your clinic is your first call.

How CoLaz plans your lip filler aftercare

Good lip filler aftercare starts before the needle, with a proper consultation and a written plan you can take home.

At CoLaz, every treatment begins with a free consultation where we take your medical history, ask about cold sores and medication, discuss what you want to change and set realistic expectations. We talk through the aftercare in plain language, and you leave with it in writing, including how to reach the clinic if you have any concerns in the days after. The choice to book is always yours, with no pressure on the day.

Choosing the right clinic matters as much as the aftercare. In England, lower-risk procedures such as lip fillers are moving towards a licensing scheme, but at the time of writing fillers remain largely unregulated, so anyone can legally inject them. Always check that your practitioner is trained and listed on a recognised register such as the JCCP. For more on candidacy and what to expect, see our common questions.

If you are considering lip filler, or you have questions about your aftercare, book a free consultation at one of our seven UK clinics and we will plan it with you properly.