Current Popular Trends in Lip Filler Treatments

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Lip filler has evolved from a single straightforward injection technique into a portfolio of distinct named approaches, each producing a different aesthetic outcome. The Russian lip, the cherry lip, the cupid’s bow technique, the keyhole pout, the lip flip, and the Non-Surgical Lip Lift (NLL) are all distinct techniques with different injection patterns, different volumes, and different ideal candidate anatomies.

Understanding the differences matters because choosing the wrong technique for your anatomy is one of the most common reasons lip filler doesn’t look right. A technique that produces beautiful results on one face produces unnatural distortion on another. This guide explains what each technique actually involves, who it suits, and the broader question of when chasing a trend produces worse results than with your own .

For the comprehensive overview of generally, see our main service page.

The anatomy that matters

Before discussing specific techniques, the key anatomical landmarks:

The vermillion border is the line where pink lip skin meets ordinary facial skin. It’s by a small ridge called the white roll. Crisp definition of this border is one of the markers of youthful lips.

The cupid’s bow is the M-shape at the top of the upper lip, formed by two peaks separated by a central dip. The depth and of the cupid’s bow varies significantly between individuals — some have pronounced cupid’s bows, others have nearly flat upper lip borders.

The philtrum is the vertical groove between the nose and the upper lip, framed by two ridges called philtral . The length and depth of the is largely genetic.

The tubercles are the three soft bumps of the upper lip (one central, two lateral) and the two of the lower lip. Their prominence affects the overall lip shape and how light catches the lip surface.

The vermillion itself is the red zone of the lip — what most people mean when they say "lip." Its height (vertical dimension) and projection (how far it comes forward) are the main variables most filler techniques modify.

Knowing this terminology makes the differences between techniques much clearer.

The Russian lip technique

The Russian lip technique uses precise micro-injections placed at and around the vermillion border, rather than the body of the lip. The aim is not to add overall volume but to increase the vertical height of the lip and sharpen the definition of the border. Done well, the result is a more pronounced, "lifted" lip shape with a crisp edge.

The trade-off: this technique has become associated with significant problems when used on the wrong patient. Common issues include:

The Russian lip technique requires anatomical predisposition to work well. Patients with well-defined vermillion borders, generous lip volume, and longer philtrums tolerate it. Patients with short philtrums, thin lip skin, or naturally subtle borders rarely look natural with this technique.

A particular caution worth noting: the migration risk associated with Russian lip work is one of the reasons we strongly advise against — when migration occurs with HA filler it can be dissolved, but permanent products cannot be removed if they drift into the wrong position.

For more on what happens when filler drifts above the vermillion, see our guide on .

The cherry lip technique

Originating in Korean aesthetic practice, the cherry lip technique focuses on enhancing the central portions of the upper and lower lips, leaving the lips untouched. The visual effect is described as placing soft cherry shapes at the centre of each lip — adding subtle projection changing the overall lip outline.

When it works well, the cherry lip a more natural-looking outcome than many other techniques, because it preserves the existing lip shape and just adds gentle central emphasis. The result is youthful-looking without obvious lip "filling."

The technique works best for patients whose natural lip anatomy already has some projection or whose lips have a soft, rounded centre. Forcing this technique on a patient with a long, narrow lip shape produces unsatisfactory results — the central enhancement looks disconnected from the rest of the lip. For patients whose lip has a underlying cause, see our guide on .

The cupid’s bow technique

The cupid’s bow technique combines elements of the and cherry . The focus is on enhancing the two lateral peaks of the upper lip (the tubercles at either side of the cupid’s bow) and defining the cupid’s bow itself through micro-injections, while leaving the central tubercle of the upper lip relatively unchanged.

The result is a sharpened, more dramatic cupid’s bow with the two peaks more prominently defined. Done well, this technique can transform a flat or subtle upper lip border into something more striking without significantly changing overall lip volume.

This technique works best for patients who already have some natural cupid’s bow definition that can be enhanced. Patients with naturally flat upper lip borders need careful assessment — forcing definition where none exists anatomically often looks artificial.

The keyhole pout

The keyhole pout technique aims to create a pronounced gap or "keyhole" at the centre of the lips when they’re slightly parted, producing a specific lip shape that became fashionable social media imagery several years ago. The injection pattern leaves the centre of the upper lip less filled while building volume at the lateral upper lip and the entire lower lip.

The technique can produce still-photograph results but often looks unnatural in motion. Speech and natural facial expression depend on the entire lip working as an integrated unit — a deliberately created central gap can read as oddly fixed or artificial when the patient is talking or smiling.

The keyhole approach has fallen out of favour as patients and practitioners have moved toward more naturalistic enhancement. Patients still requesting it should think carefully about the look they want in selfies will be the look they want in everyday life.

The lip flip

The lip flip is technically different from the techniques above because it uses anti-wrinkle injections rather than filler. Small doses of botulinum toxin ( 2 to 4 units) are placed into the orbicularis oris muscle just above the upper lip border, weakening the muscle’s downward pull. The muscle allows the upper lip to "flip" outward, exposing slightly more vermillion. See our guide on for the full mechanism explanation.

The result is a subtle increase in apparent upper lip volume without adding any product to the lip itself. The effect is mild — appropriate for patients who want modest without committing to filler, or who want to combine with filler for a layered approach. The direct comparison between the two is covered in our guide on .

Lip flip lasts 8 to 12 weeks, considerably shorter than filler. For more on anti-wrinkle injection use generally, see our .

The Non-Surgical Lip Lift (NLL)

The Non-Surgical Lip Lift represents a shift toward more anatomical thinking in lip enhancement. Rather than treating the lip in isolation, the NLL approach considers the lip in context with the whole face — particularly the relationship between the lip, the philtrum, the nasal base, and the upper face.

The core insight: an isolated lip on an ageing face can look more, not less, aged. Augmenting the lips of a patient in their 60s without first addressing perioral volume loss, lower face descent, or asymmetry produces an unnatural result — the enhanced lips look disconnected from the rest of the face.

The NLL technique combines:

The aim is overall facial harmony rather than maximally large lips. For some patients, this means very modest lip filler combined with other treatments. For others, it means dissolving previously placed filler and starting again with a more comprehensive plan.

This approach reflects what experienced — including our specialist team led by Dr Spyridon Vlachos — increasingly recommend over lip filling.

Why technique selection matters

Each of these techniques works on the right patient and disappoints on the wrong patient. The fundamental error is choosing a technique because of the image you’ve seen on social media, rather than the technique that suits your anatomy.

A useful for about which technique fits:

If your natural lip border is well-defined and your philtrum is average to longer: Russian or cupid’s bow techniques can work if you want more dramatic definition.

If your lips have natural central fullness: cherry lip tends to look natural.

If your lips are generally thin and your face shows other signs of ageing: NLL is usually the better answer than isolated lip volume.

If you want subtle enhancement and aren’t sure about filler: lip flip provides a brief trial of slightly more visible upper lip committing.

If your goal is dramatic lip enhancement beyond what filler can safely deliver: consider surgical alternatives like . See our guides on and . For the head-to-head comparison of all three options, see .

The trend-chasing problem

A significant concern in current lip filler practice is patients requesting named because they’ve seen them advertised, without consideration of whether the technique suits their anatomy. The combination of:

…has produced an environment where many patients accumulate filler year after year, chasing specific looks that may never have suited their anatomy in the first place. The result is an increasing prevalence of obviously enhanced lips that don’t look in motion or in profile.

The honest counsel from experienced practitioners is usually toward less rather than more — modest volume, appropriate placement, and periodic to prevent accumulation. For more, see our guide on .

What we recommend at Centre for Surgery

Our approach to lip enhancement is grounded in three principles:

1. Anatomical respect. Working with your existing lip anatomy rather than against it. Lips that already have certain features can be enhanced; lips that don’t have those features can’t be transformed into something they were never going to be without producing results.

2. volumes. Most need 0.5 to 1ml for an initial treatment, with a small top-up at 2 weeks if needed. Going bigger doesn’t mean better — and overfilling is the single largest cause of lip filler problems.

3. Facial context. Considering the lips as one feature among many. Treating the lips in isolation when the broader face has changes that need addressing usually produces worse results than treating the face as a whole.

A consultation establishes which technique (if any) is appropriate for your specific anatomy, what volumes make sense, and whether other facial treatments would produce a better overall result. We’re equally willing to recommend smaller volumes than patients arrive expecting — or to recommend dissolving accumulated filler first — when that’s what produces the best long-term outcome.

Cost

At Centre for Surgery, lip filler is priced per syringe. Most patients need 0.5 to 1ml for an initial treatment. Subsequent maintenance typically uses similar or smaller volumes. The 2-week follow-up review is as standard. , if needed, is priced per session. , including 0% APR, are available.

What good lip filler should look like

A simple set of markers for a well-executed result:

Common questions

Ask. An experienced injector should be able to explain exactly what they’re doing and why — including why a particular technique suits your anatomy or doesn’t. If they can’t explain or seem to apply the same technique regardless of patient, that’s a warning sign.

Yes — experienced injectors often elements (some central volume with some border definition, for example) tailored to individual anatomy. Strict adherence to a single named technique is less common in skilled hands than combining what works.

The honest answer is that you can’t have someone else’s lips — your is different, your facial proportions are different, and the same filler approach that worked on another person may not work on you. A good consultation focuses on improving your own lips rather than trying to recreate someone else’s.

No — they work well together. The lip flip can enhance the subtle effect of conservative filler, particularly for the upper lip. Many patients have both done together.

Final assessment is at 2 weeks once swelling has fully resolved. Don’t judge the result before that point. If you’re unhappy at the 2-week mark, hyalase can dissolve the filler within 24 to 48 hours.

For some anatomy and some patients, more substantial enhancement is appropriate and looks natural. The judgement isn’t about absolute volume but about what suits the individual face. A consultation establishes what your specific anatomy can support before settling on the right approach.

Centre for Surgery · CQC-regulated · GMC specialist-registered surgeons · · · ·

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Centre for Surgery is a CQC-regulated private hospital on London’s Baker Street, delivering plastic and cosmetic surgery through GMC-registered specialist surgeons. Our expertise spans facial procedures including and , , for men, and body contouring procedures such as and . Patient safety, surgical excellence and natural-looking results sit at the heart of everything we do.

Centre for Surgery is a CQC-regulated private hospital on London’s iconic , plastic and cosmetic surgery led by GMC-registered consultant surgeons.

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