Lip Filler Styles: The Complete Guide to Russian, Classic, Natural and Defined Lips
Updated: 1 day ago
Russian lips, classic lips, natural lips, a cupid's bow lift: clinics and social media use a growing list of names for lip filler styles and shapes. The names are useful shorthand for a look you like. They are not medical categories, and none of them has an agreed definition. The same "style" can look very different on two people, because the result depends on your existing lip shape, your facial proportions, the product used and how the practitioner plans the treatment.
So the most useful way to think about a style is as a goal. Do you want more fullness, a sharper outline, more height in the upper lip, better balance between the upper and lower lips, or just a little more of what you already have? Subtle enhancement is a perfectly reasonable goal, and so is deciding not to have treatment at all.
I'm Marina, and I run Juvenology Clinic on King Street in Maidstone, where I plan and carry out every lip filler treatment myself. This guide explains the main lip filler styles, what each one tries to achieve, what filler can and cannot do, and what to think about before you book anywhere.
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What are lip filler styles?
Lip filler styles are names for the result someone wants from lip filler, such as natural, classic, Russian, cupid's bow or defined lips. Each one describes a goal, like more fullness, more height in the upper lip or a sharper outline. None is a set technique or a fixed amount of filler, and none has an agreed medical definition.
For example, "Russian lips" describes a taller, more upright upper lip. "Natural lips" describes a result that still looks like your own lips. "Defined lips" describes a crisper outline.
Three things are easily confused:
A style is an aesthetic goal, the look you want.
A technique is how filler is placed: where, how deep and with which instrument. Techniques are clinical decisions.
A product is the filler itself. Different hyaluronic acid fillers behave differently once injected.
Most style names come from clinics and social media, and few have a definition in the medical literature. "Russian lips" is one of the few described in published papers, and even there mainly by its appearance. [6, 7] Clinics also use their own names for their treatment options. At Juvenology, for example, the lip filler options are called Subtle, Signature and Russian. The name tells you what the clinic intends, but it can't tell you how your lips will turn out.
That is why a style shouldn't be chosen from a photograph alone. A look that suits someone with a full lower lip and a short upper lip may not translate to someone with thin lips or a long upper lip. Your starting anatomy shapes what is achievable and safe.
Lip anatomy and facial proportions
You don't need to learn anatomy to choose a style, but knowing a few terms makes a consultation easier to follow.
Vermilion: the pink or red part of the lip.
Vermilion border: the edge where the pink lip meets the surrounding skin. A clear border gives the lips their outline.
Cupid's bow: the double curve in the middle of the upper lip border.
Philtrum: the vertical groove between the nose and the cupid's bow.
Oral commissures: the corners of the mouth.
Lip body: the main fleshy part of the lip, which gives fullness and projection.
Practitioners also think about projection (how far the lips sit forward in profile), height (how tall each lip is from the border to where the lips meet), width, existing asymmetry, and how the lips relate to the nose and chin.
Blood vessels
The lips are supplied by the labial arteries, one on each side of each lip. In a study of 193 cadaver heads, the upper and lower labial arteries most often ran beneath the inner lining of the lip (78% of measurements), but sometimes within the muscle or just under the skin, and their depth changed along the lip in about three in ten cases. The middle of the lip was the most variable area. [2] This is why lip filler needs someone with detailed anatomical training, and why no technique removes the risk entirely.
There is no single ideal lip ratio
You may see a "golden ratio" for upper to lower lip. Research doesn't support one universal ideal. In an international survey of 1,011 people, 60% preferred upper and lower lips of equal height, and preferences varied with age, gender, country and profession. [3] A separate study, which rated only white women's faces, found a lower lip about twice the height of the upper lip was rated most attractive. [4] Different studies reach different answers, and neither applies to every face.
How lips change with age
In an MRI study of 200 people, the upper lip tended to lengthen, thin and lose volume with age, particularly in women. [5] This matters for planning. In an older face, adding volume alone may not restore the look of younger lips, and a longer upper lip can limit how much height filler can add. Fine vertical lines around the mouth are a separate concern from lip shape, and the page on perioral line filler for lip lines covers them.
The different lip filler styles explained
Russian lips
Russian lips, sometimes called the "Bratz doll" look, aim for a taller upper lip with a lifted, pronounced cupid's bow. [6, 7] The emphasis is on vertical height and shape, rather than making the lips project further forward.
The evidence behind it is limited. A small 2024 study of 30 volunteers measured an increase in the height of the pink lip 30 minutes after treatment, while the lips were still swollen. Its only later contact was a phone call at one week, and it had no comparison group, so it tells us little about longer-term results. [6] A 2026 review notes that these techniques have been criticised for an increased risk of filler spreading into the skin above the lip. [7]
The result can look structured and noticeable, but it doesn't have to be dramatic. How it looks depends on how much filler is used and on your starting lip. It suits some lip shapes better than others, particularly where the upper lip has enough height to work with. Because the name is used loosely, ask any practitioner exactly what they mean by it.
Classic lips
"Classic" usually means balanced enhancement: adding some volume to both lips while keeping their natural proportions. It is less a specific shape than a moderate, general approach, with moderate volume and moderate definition. Different clinics use the word differently, so ask what result they have in mind.
Natural lips
Most people asking for natural lip filler want their lips to look like their own lips, slightly fuller or better defined, without obvious signs of treatment. Natural doesn't mean no visible change. It usually means a modest change that fits your face, with a low volume of filler.
A natural-looking result depends on the amount of filler, the product, how it is placed and your starting anatomy. Choosing a style called "natural" doesn't guarantee it.
Cupid's bow enhancement
This focuses on the double curve of the upper lip border, either sharpening a bow that is already there or making a flatter one more visible. It usually involves little added volume. Enhancing an existing bow is generally more predictable than trying to create one that isn't there. If your bow is very flat or your upper lip is long, filler alone may give only a limited change.
Defined lips
Defined lips focus on the vermilion border, giving the lips a clearer outline. Definition is different from volume, and you can have a sharper edge with little change in fullness. Over-definition can look like a ridge or a drawn-on line, so restraint matters.
Other style names
Keyhole pout: fullness at the sides of the upper lip with a small gap in the centre, creating a keyhole-shaped opening. Definitions vary between clinics.
Butterfly lips: there is no agreed meaning. The name has been used for at least three different things, including one that involves lip taping rather than filler.
Angel lips and Hollywood lips: there doesn't appear to be a consistent definition of either, so they aren't described here. If a clinic uses one of these names, ask what it means in practice.
The lip flip is not lip filler
A lip flip is a separate treatment that works on the muscle around the mouth. It doesn't use filler and it doesn't add volume. [8] It has its own risks and needs its own face-to-face assessment. This guide is about dermal filler only.
Lip filler styles and shapes compared
Style | Main aim | Typical appearance | Volume emphasis | Definition emphasis | Important considerations |
Natural | Look like your own lips, slightly enhanced | Modest change in fullness or shape | Low | Low to moderate | Not guaranteed by the name; depends on amount and anatomy |
Classic | Balanced enhancement of both lips | Proportions kept, both lips fuller | Moderate | Moderate | Means different things at different clinics |
Russian | Height and shape of the upper lip | Taller upper lip, lifted and pronounced bow | Moderate | High | Limited evidence; criticised for migration risk; suits some lips better than others |
Cupid's bow | Sharper or more visible bow | Clearer double curve in the upper lip | Low | High at the bow | Hard to create a bow that isn't there |
Defined | Clearer outline | Crisper vermilion border | Low | High | Over-definition can look like a ridge |
Full | More volume and projection | Larger, more forward lips | High | Variable | Proportion and safety limit how much is appropriate |
Hydrated | Smoother, plumper look | Little change in shape | Low | Low | Filler doesn't hydrate the lips |
Heart-shaped | Defined bow, fuller upper lip | Upper lip tapering towards the corners | Moderate | Moderate to high | Overlaps with Russian lips; limited by existing shape |
Treatment amounts and techniques vary with your anatomy, any previous filler and the practitioner's assessment. No style requires a fixed number of millilitres.
Which lip filler style is most natural-looking?
None automatically. "Natural" depends on who is looking and on how the result fits your face. A small, well-placed change in any style can look natural. A large change in a "natural" style may not. The amount of filler, and how well the result matches your proportions, matter more than the name.
Which lip filler style is right for you?
Start with what bothers you, or what you would like to change, rather than with a style name. These questions can help you prepare for a consultation:
Do you want a subtle change that people may not notice?
Is your main wish more fullness, or a clearer outline?
Would you like to keep your current lip shape?
Are your lips uneven, and does that bother you?
Are you drawn to a more structured upper lip?
Have you had filler before, and how did it settle?
If your main goal is | It may lead to a discussion about |
Subtle enhancement | A small amount of filler, with the option to add more later |
More fullness | Volume in the lip body and how it fits your face |
Better definition | The vermilion border and cupid's bow |
A stronger cupid's bow | Whether your existing bow can be enhanced |
A more structured upper lip | Russian-style approaches and whether your upper lip has the height for them |
Balanced upper and lower lips | The proportions that suit your face, not a fixed ratio |
These are starting points for a conversation with a qualified practitioner, not treatment recommendations. A photo of someone else's lips can show the look you like, but it can't tell anyone what will suit your anatomy.
If you're not sure which approach suits you, a consultation is the place to work it out. At Juvenology it costs £50 for 30 minutes, and there is no obligation to go ahead with treatment.
Lip filler styles vs injection techniques
A style describes the result. A technique describes how the filler is placed, and it is chosen by the practitioner from your anatomy and goals. Published descriptions of Russian-style techniques differ from more conventional approaches, and from each other. [6, 7] Some practitioners use a fine needle, others a blunt-tipped cannula, and many use both.
In a large US survey of 370 dermatologists covering about 1.7 million syringes, blocked blood vessels were reported less often with cannulas (about 1 per 40,900 syringes) than with needles (about 1 per 6,400). Occlusions still happened with cannulas, and the survey relied on doctors' recall, so it can't prove that one method is safer in every hand. [14] No technique is risk-free.
This guide deliberately doesn't describe injection depths, placement or amounts. Those decisions need clinical training and an assessment of your face.
What is lip filler made of?
Most lip fillers are made of hyaluronic acid (HA), a substance that occurs naturally in the body and attracts water. In fillers, the HA is chemically processed ("cross-linked") into a gel. Products differ in firmness and how they spread, which affects whether they suit fine definition or adding volume. Juvenology's dermal fillers in Maidstone page lists the other areas treated, and there is a separate guide to cheek fillers if you are thinking about the mid-face as well.
At Juvenology, I use Vivacy's Stylage range for lips, alongside other products where appropriate. Vivacy describes Stylage Special Lips as indicated for redefining the lips and/or adding volume, and states that it contains a local anaesthetic (lidocaine) and may need several touch-ups over time. [9]
A brand doesn't guarantee a result. Product choice is one part of the plan, alongside your anatomy, the amount used and how it is placed. Online comparisons of brands are rarely based on head-to-head trials, so treat claims that one brand is "the best" with caution. It is reasonable to ask which product will be used and where it came from. [1]
How long does lip filler last?
Lip filler is temporary. How long it lasts varies between people and products.
The evidence gives a rough picture. In a 12-month study of one lip product, 78% of people still had improved lip fullness at nine months and 48% at 12 months. [10] A 2021 analysis of lip studies found that about three-quarters of people still had a meaningful improvement at six months, and just under half at 12 months. [11] These studies used other brands, not necessarily the product you would have.
Lip filler often stops looking as full before it has completely gone, so you may notice the effect fading gradually. When to top up, or whether to at all, is something to decide with your practitioner as the filler fades, rather than by the calendar. No style lasts longer than another by definition.
Lip filler before and after: what to expect
Before-and-after photos can help you picture a style, but they are easy to misread. Lighting, camera angle, facial expression, make-up and editing can all change how lips look. A photo taken straight after treatment shows swelling as well as filler. And someone else's result depends on their starting lips, not yours.
UK advertising rules require clinics to hold proof that before-and-after photos are genuine, unaltered and representative of the results people can expect. [18] Even so, a photo shows one person's outcome. It doesn't prove which product or technique was used, and it can't predict your result.
Straight after treatment, lips usually look larger and may look uneven because of swelling. In one lip filler trial, most injection-site reactions, such as swelling and tenderness, settled within two weeks, and some, including firmness and lumps, took up to a month. [13] Wait until swelling has settled before judging the result.
Who is suitable for lip filler?
Lip filler isn't right for everyone, and a good consultation includes the possibility of being told "not now" or "not this".
In England, cosmetic filler can't legally be given to anyone under 18, and parental consent doesn't change this. It is also an offence to book or arrange the treatment for an under-18. [19]
At Juvenology, the lip filler page explains that treatment isn't suitable, or should wait, if you:
are pregnant or breastfeeding
have a cold sore, spots or any infection on or near the lips
have had a reaction to filler or its ingredients
have had problems with filler before, such as lumps or migration
have certain medical conditions or take certain medicines
want a result filler can't safely give.
Other situations need more assessment rather than an automatic no:
Previous filler: your practitioner needs to know when, where and what was used. Old filler may need to be assessed, or sometimes dissolved, first.
A history of cold sores: filler injections can trigger a cold sore. [12] If you get them, say so, and your practitioner may suggest postponing or discussing preventive treatment with a prescriber.
Medicines and supplements: some increase bruising. Don't stop a prescribed medicine without speaking to the doctor who prescribed it.
Expectations: if you feel very distressed about your appearance, or keep wanting more treatment, it is worth talking to your GP before having more.
Lip filler risks and safety
Lip filler is a medical procedure. The NHS notes that complications of dermal fillers can be serious, including infection, nerve damage and blindness. [1]
Common and expected effects
Swelling, bruising, tenderness and redness are common. In a 2021 analysis of lip filler studies, swelling was reported by about three-quarters of people. [11] Temporary unevenness while swelling settles is also common.
Less common and delayed effects
Lumps or irregularities. These may be filler that hasn't settled evenly, or a tissue reaction.
Migration. Filler can spread beyond the border of the lip, which can blur the outline. [22]
Infection. This is uncommon. Watch for increasing redness, heat, pain or discharge.
Cold sore flare-ups. Lip injections can reactivate the cold sore virus. [12]
Delayed inflammatory reactions. Swelling, redness or tender lumps weeks or months later, sometimes after an infection or dental treatment. Reported rates vary widely between studies. [17]
Allergic reactions. These are rare.
Vascular occlusion
The most serious risk is a vascular occlusion: filler blocking a blood vessel, cutting off the blood supply to the tissue it feeds. Without prompt treatment, the skin or lip tissue can be damaged permanently. [15, 16] In the US survey above, the lips and the lines from nose to mouth were the areas most likely to be affected, although most occlusions resolved without lasting harm. [14]
UK complications guidance describes these warning signs: [15, 16]
severe, increasing or unusual pain
skin that turns pale, white or dusky, sometimes followed by a purple or blotchy pattern
coldness, or colour changes that spread
later, blisters, darkening or skin breakdown.
If you notice | What to do |
Any change in vision, such as blurring, loss of sight, double vision or eye pain | Call 999 or go to A&E immediately. Say you have had filler |
Face drooping, arm or leg weakness, slurred speech or confusion | Call 999 immediately |
Severe or worsening pain, or pale, white, dusky or blotchy skin around the lips | Contact the clinic that treated you straight away. If you can't reach them, call NHS 111 or go to A&E |
Swelling, redness, heat or a new lump days or weeks later | Contact the clinic promptly for an assessment |
If you were treated at Juvenology, call 07413 138 825. The clinic's patient guide on when to contact us after treatment is worth keeping to hand. Don't try to treat a suspected complication yourself, for example by massaging the area or waiting to see if it improves.
Can lip filler be dissolved?
Most HA fillers can be broken down with a dissolving enzyme. [15, 16, 22] Using it needs a face-to-face assessment by a prescriber. It is an important safety tool, especially for vascular occlusion, where guidance is that it should be given without delay. [16] Even so, it doesn't make filler risk-free or fully "reversible". It can cause its own reactions, it may not give a perfect result, and it can't undo tissue damage that has already happened.
Why the setting and the practitioner matter
Ask whether the practitioner can recognise and manage complications, and whether they have access to a prescriber and emergency medicines. Treatment in a non-clinical setting, or by someone without medical training, can make it harder to get help quickly if something goes wrong.
What happens at a lip filler consultation?
A consultation should cover:
your medical history, medicines, allergies and any previous filler or complications
an assessment of your lips and face at rest, when you talk and smile, and in profile
what you would like to change, and why
whether your goal is achievable and safe with filler
the risks, alternatives (including no treatment) and likely costs
time to decide, and written consent before any treatment.
At Juvenology, the filler appointment includes an assessment of your face at rest, in expression and in profile, as well as your medical history. You can book a consultation first if you would rather talk it through before committing.
Lip filler treatment and aftercare
On the day, expect the appointment to include a further check of your health and goals before anything is injected. Some lip fillers, including some versions of the Stylage lip products, contain a local anaesthetic to make treatment more comfortable, but you are likely to feel some discomfort. [9] Your practitioner may adjust or postpone the plan if something has changed, if you are unwell, or if they don't think a requested result is safe.
Afterwards:
Expect swelling, bruising and tenderness. These ease over the following weeks, as described in the before-and-after section above. [13]
Avoid pressing or massaging your lips unless your practitioner tells you to.
Follow your written aftercare. Juvenology's injectable aftercare guide sets out what to do and avoid.
Contact the clinic if you are worried, notice a lump, or swelling is getting worse rather than better.
Seek urgent help for any of the warning signs in the safety table above.
Aftercare is there to support normal healing. A suspected complication is a different matter, and it needs to be assessed rather than managed at home.
Common lip filler myths
"Russian lips are always more dramatic." The style focuses on height and shape, not necessarily size, and a small amount of filler can give a subtle version. What matters is the plan for your lips, whatever it is called.
"Natural lips mean no filler." Natural usually means a modest change that suits your face. Ask what change is actually planned.
"More filler means better results." Volume beyond what your lips can support can look unnatural, and larger volumes have been linked with migration. [7] More can be added later if needed, whereas removing filler is less predictable.
"All lip styles use the same product." Products differ in firmness and spread, and practitioners choose them for the goal. It is fair to ask which product will be used and why.
"Lip filler always lasts the same time." Studies show wide variation between people. [10, 11] Be wary of any fixed promise about how long a result will last.
"Filler permanently changes the shape of your lips." HA filler is temporary and breaks down over time. Whether repeated treatment has lasting effects on the tissue isn't well studied, so it makes sense to plan as though results will fade.
"There's a style that suits everyone." Anatomy and proportions vary, and so do preferences. [3, 4] Your own goal and your own face are a better starting point than a popular name.
"Lip filler is completely reversible." HA filler can usually be dissolved, but dissolving has limits and can't undo damage. [16, 22] Lip filler is a medical decision, and it is safer to approach it as one than as a trial run.
"One technique is safer than all others." Cannulas were linked with fewer reported occlusions in one large survey, but occlusions still occurred. [14] The practitioner's experience, and their ability to manage complications, matter more than any single tool.
"The most expensive filler is the best." Price reflects many things besides quality, and there are few head-to-head trials between brands. A more useful question is why a particular product suits your lips.
"Before-and-after photos show what I'll get." Photos vary with lighting, angle, timing and anatomy. [18] They can give you ideas, but they can't predict your result.
Frequently asked questions
What are the different types of lip filler styles?
Common names include natural, classic, Russian, defined, full, hydrated, heart-shaped and cupid's bow enhancement. They describe goals such as fullness, height or definition, not standard medical treatments.
What is the difference between Russian lips and classic lips?
Russian lips focus on height and shape in the upper lip, with a lifted, pronounced cupid's bow. Classic lips usually mean balanced extra volume in both lips while keeping your natural proportions.
What are natural lip fillers?
A natural result is a modest change that still looks like your own lips. It depends on the amount of filler, product, placement and anatomy rather than on a special product.
Which lip filler style creates fuller lips?
A "full lips" approach focuses on volume and projection, and classic enhancement adds moderate volume. How much is appropriate depends on your proportions and safety.
Which style focuses on the cupid's bow?
Cupid's bow enhancement, and to a large extent Russian and heart-shaped lips, focus on the double curve of the upper lip.
What is the difference between lip filler and a lip flip?
Lip filler adds volume or definition with a gel. A lip flip is a separate treatment that works on the muscle around the mouth, and it doesn't add volume. [8]
How much lip filler is usually used?
There is no fixed amount for any style. It depends on your lips, your goal and any previous filler, and is decided at assessment. Many people start with a small amount.
How long do lip fillers last?
It varies. In studies, most people still had improvement at six months and around half at 12 months. [10, 11]
Are lip fillers painful?
Most people feel some discomfort. Some lip fillers, including some versions of the Stylage lip products, contain a local anaesthetic. [9] Lips can feel tender for a few days afterwards.
How long does lip filler take to settle?
In one trial, most swelling and other injection-site reactions settled within two weeks, and some took up to a month. [13] Judge the result once swelling has gone.
How much does lip filler cost?
Prices vary between clinics and with what is planned for your lips. At Juvenology, lip filler starts from £200, and the lip filler page lists the current options and prices. A consultation on its own costs £50 for 30 minutes.
Can lip fillers look unnatural?
Yes, particularly with too much volume, over-definition or filler migrating beyond the lip border. [22] Careful planning and starting small reduce the chance.
Can lip fillers be dissolved?
Most HA fillers can be dissolved with an enzyme treatment that needs a face-to-face assessment by a prescriber. [16, 22] Dissolving has its own risks and limits.
Are lip fillers safe?
Lip filler is generally well tolerated, but it is a medical procedure with real risks, including rare serious ones such as a blocked blood vessel. [1, 14] Choosing a qualified, experienced practitioner matters.
What are the risks of lip fillers?
Common effects are swelling, bruising and tenderness. Less common risks include lumps, migration, infection, cold sore flare-ups, delayed reactions and vascular occlusion. [11, 12, 14]
Can you change your lip filler style?
Often, yes, but it depends on any filler already in place. Existing filler may need to settle, fade or be assessed, and sometimes dissolved, first.
Can you have lip filler if you've had previous treatment?
Usually, after an assessment. Bring details of when and where you were treated, the product used and any problems.
How do you choose a lip filler practitioner?
Check their qualifications, professional registration, training and experience, and whether they can manage complications. See the section on choosing a practitioner below.
What should you ask during a consultation?
Ask who will treat you, what product will be used and where it came from, what result is realistic, what the risks are, what happens if something goes wrong, and the full cost. [1]
What happens if you don't like your results?
Wait until swelling has settled, then go back to your practitioner. Small adjustments are sometimes possible. If needed, HA filler can usually be dissolved, after assessment by a prescriber.
Choosing a qualified lip filler practitioner
Dermal fillers don't always need a prescription, and there is currently no licensing scheme in England controlling who can inject them. The government has said it plans to restrict the highest-risk procedures to qualified healthcare professionals, and it is consulting on which procedures this should cover. The October 2026 proposals name non-resorbable facial fillers, rather than temporary HA fillers such as most lip fillers. These are proposals, not law. [20, 21]
That makes your own checks important. The NHS suggests asking about the practitioner's qualifications, training and experience, the name of the product and where it came from, and avoiding practitioners who have only done a short training course. [1] Voluntary registers such as those of the Joint Council for Cosmetic Practitioners (JCCP) and Save Face show that practitioners meet set standards. [1] For nurses, doctors and dentists, you can also check their professional register.
Final thoughts
Lip filler style names help you describe a look you like, but they can't promise a particular result. The questions that matter more are what you want to change, whether filler can achieve it safely on your lips, and who will do it.
If you would like to talk through your options, you can book a lip filler consultation at Juvenology Clinic in Maidstone. We'll look at your lips and face, discuss what you hope to achieve and explain whether filler is the right choice, including if the answer is no. You can read more about the options and current prices on the lip filler page. Lip filler at Juvenology starts from £200. If you have a quick question before booking, you can also start with a free discovery call on WhatsApp.
About the author
Marina Kostadinova-Yankova is the founder of Juvenology Clinic in Maidstone, Kent. She is a nurse with more than 25 years of nursing experience and qualified in Bulgaria in 1999. Read more about Marina.
This article is general information and does not replace an individual consultation or medical advice. Lip filler is not suitable for everyone. In an emergency, call 999. Information checked in November 2026.
References
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