Hydration
Soft HA filler can improve water-binding within the lip and create a fresher appearance without necessarily creating significant bulk.
Dermal Fillers · South Kensington
Lip Fillers — Natural Shape, Hydration & Balance
Subtle lip enhancement using soft hyaluronic acid filler to improve hydration, definition and proportion — always planned around your facial anatomy rather than a standardised lip shape.
The aim is not simply to make lips larger. Treatment may be used to restore hydration, refine the border, balance asymmetry or add carefully judged volume while preserving a natural relationship with the face.
The treatment
What are lip fillers?
Lip fillers are injectable gels used to alter selected aspects of lip shape, hydration, contour or volume.
At Santi we use temporary hyaluronic acid fillers such as Restylane and Juvéderm. Hyaluronic acid attracts water and can be selected in different gel characteristics depending on whether the priority is soft hydration, definition or structural support.
The appropriate product, placement and amount are agreed during consultation rather than chosen from a fixed “lip filler package”.
Treatment may be used to:
- Improve lip hydration and softness
- Define the vermilion border
- Refine Cupid's bow
- Improve selected asymmetries
- Balance upper and lower lip proportions
- Add conservative volume
- Soften selected peri-oral lines
The goal is proportion — not simply volume
Shape
Small amounts can be used to define the border, refine Cupid's bow or improve vertical height where this suits the facial proportions.
Balance
The relationship between upper lip, lower lip, chin, teeth and profile is considered rather than treating the lips as an isolated feature.
Symmetry
Filler can sometimes improve visible asymmetry, although natural faces are not perfectly symmetrical and treatment does not aim to make them so.
Conservative volume
For many patients, 0.5–1.0 ml is enough to produce a meaningful but controlled change. More is not automatically better.
Staged treatment
Where greater change is appropriate, a staged approach may give better control than trying to achieve everything in one appointment.
Treatment at Santi
Lip filler treatment in practice
Watch a lip filler treatment at Santi London. The emphasis is on careful placement and controlled enhancement — working with the patient's existing lip anatomy rather than imposing a standardised shape.
Every treatment begins with an individual assessment of lip shape, facial proportions, existing volume and the result the patient would like to achieve.
We assess the whole lower face
A good lip result depends on much more than the volume injected. Your clinician considers anatomy, movement and facial proportions before recommending treatment.
Upper : lower ratio
The relationship between the upper and lower lip is considered rather than automatically increasing both equally.
Profile
Lip projection is assessed in relation to the nose, chin and overall profile to avoid disproportionate enhancement.
Dental show
The relationship between the lips and teeth at rest and during movement can influence treatment planning.
Philtral structure
Cupid's bow, philtral columns and border definition are considered when planning shape and definition.
Existing filler
Previous filler is assessed for position, integration and whether additional treatment is appropriate.
Your preference
Some clients want hydration only; others want more definition or volume. The treatment plan should reflect your goal rather than a trend.
What happens during lip filler treatment?
Consultation
We review your medical history, previous treatments, lip anatomy, proportions and the result you are hoping to achieve.
Planning
The clinician selects an appropriate HA filler, volume and placement strategy for your anatomy and goals.
Treatment
Topical anaesthetic may be used. Small amounts of filler are placed using a needle or cannula depending on the area and technique.
Settling
The result is visible immediately but swelling means the final appearance should not be judged straight away. Lips usually refine over 1–2 weeks.
Immediate change — then a period of settling
Immediately
You will see an immediate difference in shape or volume, but some swelling is expected.
24–72 hours
Swelling and bruising are commonly most noticeable during the first few days and then begin to settle.
1–2 weeks
The filler integrates and the lips usually look and feel softer and more representative of the final result.
How long do lip fillers last?
Typically around 6–12 months
Hyaluronic acid filler gradually breaks down over time. The duration varies between individuals and depends on the product, placement, amount used, metabolism and other factors.
The effect generally fades progressively rather than disappearing suddenly.
Maintenance should remain conservative
Maintenance does not mean automatically adding another full syringe at fixed intervals.
We reassess the lips and surrounding facial proportions before deciding whether more filler is appropriate at all.
Different goals require different filler characteristics
Soft hydration
A softer, more flexible HA filler may be preferred where hydration and subtle enhancement are the principal goals.
Border definition
Small, carefully positioned amounts can refine the vermilion border without creating an exaggerated outline.
Structural support
Where additional projection or shape is appropriate, product choice and placement may differ from a hydration-led treatment.
Lip filler
From £500
Pricing based on your treatment plan
A typical lip enhancement uses approximately 0.5–1.0 ml, but the appropriate amount is determined by your anatomy, existing filler and desired result.
We use temporary hyaluronic acid fillers including Restylane and Juvéderm. The final treatment plan and fee are agreed during consultation.
Who may — or may not — be suitable
Lip filler may be considered if you want:
- Subtle hydration
- Better border definition
- Conservative volume
- Selected symmetry improvement
- Improved upper-to-lower lip balance
- Softening of selected peri-oral lines
Treatment may need to wait with:
- Active cold sores or infection
- Inflammation in the treatment area
- Recent dental procedures where clinically relevant
- Pregnancy or breastfeeding
- Certain medical conditions or medications
- Previous filler complications requiring assessment
Lip filler is a medical aesthetic procedure
Common temporary effects
Swelling, tenderness, bruising, redness and temporary firmness or small irregularities can occur after treatment.
Asymmetry & lumps
Some unevenness during early swelling is common. Persistent asymmetry or lumps should be reviewed rather than repeatedly manipulated at home.
Rare but serious risks
Dermal filler can rarely compromise blood supply if product enters or compresses a blood vessel. This requires urgent recognition and management.
Why hyaluronic acid matters
HA filler can be treated with hyaluronidase when clinically appropriate. Dissolving filler is itself a medical procedure with potential risks, so it is used following assessment rather than as a casual correction.
The first few days
Expect swelling
Do not judge the final result on the day of treatment. Swelling often peaks early and settles progressively.
Avoid pressure
Avoid unnecessary pressure or manipulation of the lips unless your clinician specifically advises otherwise.
Make-up
We generally advise avoiding lip make-up for approximately 12 hours after treatment.
Heat
Avoid excessive heat such as sauna and steam while swelling and inflammation are settling.
Exercise
Your clinician may advise avoiding strenuous exercise during the immediate post-treatment period.
Contact us if concerned
Increasing pain, unusual colour change, blistering or other concerning symptoms require prompt contact with the clinic.
Natural results
Often, the best result is the one that doesn't announce itself
Lip filler should not automatically mean visibly enlarged lips. For many clients the most successful treatment is one that simply makes the lips look better hydrated, slightly better defined and more balanced with the rest of the face.
We therefore favour proportion-led treatment and conservative volume rather than chasing a particular social-media lip shape.
Our approach
- Assess before injecting
- Use the smallest useful amount
- Respect natural lip anatomy
- Consider the whole profile
- Avoid unnecessary repeated filling
- Review rather than automatically top up
Lip Filler FAQs
Will my lip fillers look natural?
That is the intention. We plan treatment around your existing anatomy, facial proportions and preferred degree of change, using conservative volumes where appropriate.
How much filler will I need?
A typical lip treatment uses around 0.5–1.0 ml, but this is not a fixed dose. The appropriate volume depends on your anatomy, previous filler and desired outcome.
How long does swelling last?
Most swelling reduces substantially within the first 24–72 hours, although the lips can continue to refine over approximately 1–2 weeks.
How long do lip fillers last?
Results typically last around 6–12 months, although this varies according to product, placement, amount, metabolism and individual factors.
Do lip fillers hurt?
There is some discomfort from injections, but topical anaesthetic may be used and many HA filler products also contain local anaesthetic. Comfort varies between individuals.
Will I feel lumps afterwards?
Temporary firmness or small irregularities can occur while swelling settles and the filler integrates. Persistent or concerning lumps should be reviewed by your clinician.
Can old lip filler be dissolved?
In many cases hyaluronic acid filler can be dissolved using hyaluronidase where medically appropriate. We assess first because dissolving is itself a medical treatment with potential risks.
Can lip filler correct asymmetry?
It can sometimes improve selected asymmetries, but natural facial asymmetry is normal and perfect symmetry is neither realistic nor necessarily desirable.
What if I already have a lot of filler?
We assess existing product and facial proportions before recommending more. In some cases the best treatment decision may be to wait, dissolve previous filler or avoid adding additional volume.
Facial balance beyond the lips
Santi London · South Kensington
Considering lip filler?
Book a consultation to discuss hydration, shape, symmetry and volume. Your clinician will assess your lips in the context of the whole face and advise whether filler is appropriate — and, if so, how much is actually needed.
Lip filler from £500 · Typical volume 0.5–1.0 ml · Treatment subject to consultation and medical suitability · Santi London, 33 Thurloe Street, South Kensington, London SW7 2LQ.