What Is a Lip Flip?
The Lip Flip treatment is a minimally invasive, non-surgical procedure designed to subtly enhance the upper lip without adding additional volume. Using a few units of botulinum toxin injections (commonly known as Botox), the treatment gently relaxes the orbicularis oris muscle. As these upper lip muscles relax, the lip subtly flips outward, creating a fuller appearance and a more defined shape.
Unlike traditional lip fillers that use hyaluronic acid to plump, the Lip Flip works through muscle relaxation, meaning:
- No change to lip structure
- No filler material added
- Minimal downtime and minor side effects
It’s a cosmetic treatment often selected by those seeking natural-looking enhancement and balance over volume.
So, How Long Does a Lip Flip Last?
Most patients find that a Botox Lip Flip lasts between 6 to 8 weeks, depending on a few personal factors. These include:
- Muscle activity: If you’re naturally expressive, or use your lips a lot through speaking or playing instruments, the product may wear off faster.
- Your body’s metabolism: Some people naturally metabolise botulinum toxin more quickly than others.
- Previous treatments: First-time patients may notice slightly shorter results, while those who’ve had regular treatments often experience longer-lasting effects over time.
While this might sound short-lived compared to dermal filler, the Lip Flip’s longevity is actually one of its strengths. It allows you to test the look, refine your results, and ease into aesthetic treatments with no long-term commitment.
When Will I See Results?
The botulinum toxin injections don’t offer instant effects. Instead, patients can expect a gradual change:
- Day 1–2: No visible difference
- Day 3–5: Early signs of softening and lift
- Day 7–10: Full results develop with a subtle enhancement and more visible upper lip shape
This gentle progression results in a natural-looking result that blends seamlessly with your facial features.
Why Choose a Lip Flip Over Filler?
While both are popular procedures, Lip Flip and filler injections offer different benefits:
- Lip Flip: Ideal for correcting a gummy smile, mild volume loss, or a top lip that curls under
- Lip filler injections: Better for those wanting increase in volume, reshaping, or lip augmentation
For many, the Lip Flip procedure is an effective treatment on its own or as part of a bespoke treatment plan with subtle injectable fillers.
Is It Right for Everyone?
At PHI Clinic in London, our expert medical team conducts an initial consultation to assess suitability. Ideal candidates often include those with:
- Naturally thin lips
- Strong upper lip muscles
- Desire for subtle change without altering volume
However, those seeking a significant change in lip size or deep wrinkles around the mouth may be better suited to lip filler treatments or a combined approach.
How to Maintain Your Lip Flip
To sustain the results, we recommend follow-up treatments every 6-8 weeks. This frequency varies depending on how your body metabolises the treatment. Post-treatment care to prolong effects includes:
- Avoiding intense exercise for 24 hours
- Skipping facials or massage near injection sites
- Using SPF and hydrating lip balm
With proper care, the appearance over time remains smooth and balanced.
Can It Be Combined with Other Treatments?
. Many patients pair their Lip Flip with:
- Baby Botox to relax frown lines
- Skin boosters to enhance hydration around the lips
- Light dermal filler for lip structure or symmetry
This combination allows for a balanced and natural-looking enhancement, tailored to your aesthetic goals.
Potential Side Effects to Know
Side effects are usually minimal. You might experience:
- Minor swelling or bruising at injection sites
- Mild tenderness or stiffness in the lip area
Severe reactions are extremely rare when performed by qualified practitioners. If you’re unsure whether you’re a suitable candidate, we’ll assess everything during your consultation.
A Small Shift, A Big Confidence Boost
It might only last a few months, but the Lip Flip delivers impact far beyond its subtle nature. For many, it’s a step into the world of aesthetic medicine with a look that’s refined, soft, and personal.
If you’re curious about trying the Botox Lip Flip treatment, book your consultation with our team at PHI Clinic. Let’s achieve a balanced and natural-looking enhancement that suits your lip structure and smile with no pressure, no overfilling, and no guesswork.

