Lip filler tends to generate more questions than almost any other aesthetic treatment, partly because it’s so visible, and partly because the results seen online vary so dramatically from the subtle to the obviously overdone. Here are the questions that come up most often, answered honestly.
What Are Lip Fillers Made Of?
The vast majority of lip fillers used in reputable UK clinics are made from hyaluronic acid, a substance that occurs naturally in the body. It’s a gel-like material that adds volume and structure where it’s injected, and it integrates well with the surrounding tissue. One important characteristic: hyaluronic acid filler is reversible using an enzyme called hyaluronidase, which dissolves it safely if needed.
Does It Hurt?
Most people find the procedure more manageable than they expected. A topical numbing cream is applied around 20 to 30 minutes beforehand, which significantly reduces sensation. Many filler products also contain lidocaine, a local anaesthetic, built into the formula itself, which further reduces discomfort during the injection.
What Do Results Actually Look Like Straight After?
Immediately after treatment, some swelling and firmness is normal, and this is not the final result. Lips typically look more pronounced in the first 24 to 72 hours, settling gradually as swelling resolves. The actual settled result is best assessed at around two weeks, which is also when a review appointment typically takes place.
How Long Do Lip Fillers Last?
Lips are one of the more active areas of the face, which means filler is metabolised relatively quickly here compared to structural areas like the cheeks or jawline. Most people find lip filler lasts somewhere between 6 and 12 months, though this varies depending on individual metabolism, lifestyle, and the product used.
Will They Look Natural?
This depends more on the approach than the treatment itself. The trend in 2026 has moved clearly towards natural-looking enhancements that improve definition and structure without making the lips look dramatically different. Overfilled, unnatural results are almost always a consequence of technique, specifically injecting too much product or in the wrong areas, rather than an inherent outcome of the treatment.
A consultation should involve an honest conversation about what suits the individual’s facial anatomy, not just what they’ve seen on someone else. A practitioner willing to say “that’s more than I’d recommend for your anatomy” is a practitioner worth trusting.
Can Existing Filler Be Dissolved?
Yes. Hyaluronic acid filler can be dissolved using hyaluronidase at any point. This is one reason reputable clinics exclusively use HA-based products rather than permanent or semi-permanent alternatives: reversibility is a fundamental safety option, and a qualified practitioner should always have hyaluronidase available in clinic.
What Aftercare Is Needed?
For the first 24 hours, it’s sensible to avoid: alcohol, strenuous exercise, extreme heat (saunas or steam rooms), and direct pressure on the lips. Sleep with the head slightly elevated if possible. Staying hydrated helps the product settle well.
Who Should Avoid Lip Filler?
Lip filler is not recommended during pregnancy or breastfeeding. Anyone with an active cold sore should postpone treatment, since injections can trigger an outbreak in those prone to them; antiviral medication may be advisable beforehand for people with a history of cold sores. Certain blood-thinning medications and supplements can increase bruising, and it’s worth flagging these during the consultation.
Can Filler Migrate?
Migration (where the product moves beyond its intended placement) is a concern that comes up often. When the product is placed correctly, at the right depth and in an amount appropriate for the anatomy, it does not migrate. Migration is almost always a technique issue rather than an inherent property of the product.
What Should Be Asked at the Consultation?
Three questions worth asking any practitioner: what product will be used and where is it sourced from; what happens if a complication occurs (they should immediately reference hyaluronidase); and can they share examples of natural-looking results from patients with similar anatomy?
Book a consultation with Dr Naz at the Liverpool Rodney Street clinic to find out what’s realistic for your lips.
