What Is Dermal Filler? How Does Hyaluronic Acid Filler Work?
Dermal filler is a general term for a semi-fluid substance injected beneath the skin to create volume, soften lines or reshape facial contours. The vast majority of fillers used in medical aesthetics today contain hyaluronic acid (HA). Hyaluronic acid is a molecule the body produces naturally; it retains moisture in the skin and gives tissue its volume and elasticity. Production declines with age.
HA fillers are manufactured from cross-linked molecules produced in a laboratory. The degree of cross-linking determines the gel's viscosity and how long it persists in the tissue. Lighter gels are used for fine lines and tear troughs; denser gels are used for structural support areas such as the cheeks and jawline. HA fillers are temporary: they are broken down in the body by the enzyme hyaluronidase and absorbed. This means that an unwanted outcome — or a rare complication — can be reversed.
HA Filler Families and Brands
A number of CE- and FDA-approved HA filler families are available; each brand produces region-specific gel lines with different viscosities and cross-linking technologies:
- Juvederm (Allergan): Voluma (cheeks, jawline), Volift (mid-face, nasolabial), Volbella (lips, fine lines), Vollure (moderate depth).
- Restylane (Galderma): Lyft (deep structural support), Defyne / Refyne (dynamic expression areas), Kysse (lips), Volyme (contouring).
- Teoxane / Teosyal: RHA series (expression areas), Redensity (tear trough, fine lines), Ultra Deep (osseous-level support).
- Belotero (Merz): Soft integration profile, fine lines and transitional zones.
Differences between brands can be overstated in marketing materials. In practice, the result is determined by the practitioner's ability to match the right gel to the right area and patient. The gels we use at Nis Clinic are CE-approved products tracked by manufacturer batch number; the specific product recommended will be explained to you in detail at your consultation.
Hyaluronic acid, calcium hydroxylapatite (Radiesse), poly-L-lactic acid (Sculptra) and permanent fillers are distinct categories. This page concerns HA fillers. We no longer recommend permanent fillers (silicone- or PMMA-based products). Their complication profile — granuloma formation, late-onset nodules, inability to dissolve — is significantly worse than that of HA fillers; this is also the current position of leading international specialist societies. The greatest advantage of HA filler is that it can be dissolved with hyaluronidase enzyme when needed — a safety mechanism that has no equivalent in permanent alternatives.
Longevity by Treatment Area
How long an HA filler lasts depends on the movement of the area and the density of its vasculature and lymphatics. Gel breaks down more quickly in highly mobile areas and persists longer in deeper, more static support zones. Typical ranges:
- Lips: 6–9 months (one of the most mobile, fastest-metabolising areas)
- Nasolabial folds: 9–12 months
- Cheeks and mid-face support: 12–18 months
- Jawline contouring: 12–18 months
- Tear trough (under-eye hollow): 9–15 months
- Marionette lines: 9–12 months
These are averages. A fast metabolism, intense exercise, smoking and UV exposure can all accelerate absorption. Topping up before filler has fully absorbed can lead to product accumulation and an unnatural appearance; timing and volume are reviewed together at your follow-up appointment.
The Filler Process at Nis Clinic
Filler is often marketed as a "sit down, five minutes, off you go" procedure — that picture is misleading. It is a quick treatment, but achieving a natural result and minimising risk requires a structured process from consultation through to review.
Consultation — Facial Analysis and Expectation Discussion
We offer an initial consultation either in person at the clinic or online via Zoom or WhatsApp. Topics we cover:
- Concerns and goals: We clarify whether you are aiming for a natural enhancement or a more defined look, using visual references.
- Facial analysis and proportions: We assess your cheek, jawline and lip relationships from frontal and profile photographs, using plastic surgery anatomy as a reference. In many cases, the area a patient complains about is not the source of the problem: a concern about "small lips" may actually stem from loss of mid-face support. Treating the right area is half of achieving a natural result.
- Medical history: Autoimmune conditions, active infection, current medications (especially anticoagulants), previous filler treatments (a history of permanent filler is a critical flag), pregnancy or breastfeeding, and a history of herpes simplex (cold sores).
- Expectation management: We steer well clear of over-injected aesthetics ("Russian lips", "pillow face"). We are a clinic that is also willing to say "this treatment is not right for you."
After your consultation, a region-by-region plan is shared along with an indicative price range per area.
Preparation and Topical Anaesthesia
On the day of treatment:
- Skin cleansing and disinfection.
- Topical anaesthetic cream: Applied to the area for 15–20 minutes; the duration may be extended for sensitive areas such as the lips and tear troughs.
- Regional nerve block (optional): For sensitive areas such as the lips, a mental or infraorbital nerve block can be offered depending on the patient's preference.
Most HA filler gels also contain lidocaine; after the first few injection points, the area becomes numb and the remainder of the treatment is considerably more comfortable.
Cannula vs Needle — A Vascular Safety Decision
Two main approaches are used for filler injection: a fine needle and a cannula (a blunt-tipped, flexible small tube).
- Fine needle: Preferred for areas requiring millimetre-level precision (lip vermillion border, fine lines). The risk of inadvertent intravascular injection is higher than with a cannula.
- Cannula: The blunt tip tends to push vessels aside rather than pierce them. This substantially reduces the risk of vascular complications. For larger areas (cheeks, jawline, tear trough) and areas with a high density of blood vessels, a cannula is usually our preference; treating a wide area through a single entry point also results in less oedema and bruising.
At Nis Clinic, both techniques are used in combination depending on the area and patient anatomy. The vascular safety advantage of the cannula is scientifically established; however, where a needle is the appropriate tool, a needle is used.
Treatment — 15–30 Minutes
The treatment itself takes 15–30 minutes, depending on the number of areas planned and the volume to be placed. Average flow for one area: 15–20 minutes for topical anaesthetic to take effect, 5–10 minutes for injection (gel placement, moulding, symmetry check), then 5 minutes for post-treatment observation and aftercare instructions.
For a "full-face" plan covering four areas simultaneously, total time can reach 60–90 minutes. You remain awake throughout; the volume used per area is communicated to you as treatment progresses. Returning to work or social activities the same day is possible. Mild redness and swelling are normal; the risk of bruising is higher in areas treated with a needle, which is why we recommend scheduling treatment at least two weeks before any significant social event.
Recovery — 1–3 Days of Swelling, 2 Weeks to Full Settlement
Recovery timeline after filler:
- First 24 hours: Mild swelling, redness and tenderness are normal. Cold application (with ice wrapped in cloth — never direct contact with skin) is recommended; sleep with your head elevated.
- Days 2–3: Most of the swelling subsides. Bruising may become more visible; it resolves within 7–10 days.
- Week 1: The result is visible but not yet final. The gel may feel slightly firm — this is normal, particularly in the lips and tear trough area.
- 2 weeks: The gel settles fully within the tissue and reaches its natural softness. This is the ideal point for a review appointment.
- 6–12 months: Initial absorption begins, depending on the area; a top-up can be planned if needed.
What to avoid in the first 2 weeks: Intense exercise, saunas, steam rooms, sunbeds, very hot showers, and alcohol in the first 24 hours. If you need to see a dentist or undergo any medical procedure involving the face within the first two weeks, inform your practitioner that you have recently had filler.
Who Is Suitable?
In the right patient, this treatment delivers safe and satisfying outcomes. In the wrong patient, it can lead to disappointment or complications. Candidacy assessment is the most important part of your consultation.
Suitable Candidates
- Individuals aged 25 and over with noticeable volume loss, lines or contour concerns. Below 25, filler is often not necessary; excessive early treatment can stretch tissue over the years and lead to an overfilled appearance.
- Patients seeking a reversible rejuvenation approach who are not considering surgery.
- Those with volume loss, asymmetry or a modest fullness goal in the lips.
- Patients who have experienced softening of cheek and mid-face support but are not yet candidates for a facelift.
- Those with a less defined jawline (oval correction in women, a sharper contour in men).
- Patients with a pronounced tear trough who have appropriate skin quality and tissue thickness (see the note on Tyndall effect).
- Patients in good general health with realistic expectations.
Situations Requiring Caution or Postponement
- Pregnancy and breastfeeding: Contraindicated; there are insufficient clinical data on the safety of treatment during this period.
- Active infection: If there is an active skin infection, herpes (cold sore) outbreak or acne lesion at or near the treatment site, treatment is postponed until the infection has resolved. Prophylactic antiviral medication is recommended for patients with recurrent herpes.
- Autoimmune conditions: A careful approach is taken in patients with systemic conditions such as lupus or scleroderma; a rheumatology consultation may be requested. This is not an absolute contraindication — a risk-benefit assessment is made.
- Previous permanent filler: Permanent fillers such as silicone or PMMA are distinct from HA filler; the risk of nodule, granuloma and late complications is higher, so a detailed assessment is required. If the substance used previously is unknown, the principle of "if in doubt, don't" applies.
- Body dysmorphic tendencies: Where there is a distorted relationship with appearance and a pattern of endless revision requests, we decline to proceed. "Pillow face" and "Russian lip" aesthetics arise in this context; an ethical clinic responds with appropriate signposting, not a sales conversation.
- Anticoagulant use: Blood thinners increase bruising risk. Medically necessary anticoagulants are never stopped; the risk is explained clearly to the patient and treatment is planned accordingly.
- Glabella (between the brows) and nasal dorsum: These are the two highest-risk areas for vascular occlusion. At Nis Clinic, treatment in these areas is subject to specific assessment or an alternative is recommended; the answer to "can it be done?" is sometimes "no".
Risk Profile — Vascular Occlusion and Hyaluronidase Reversal
In experienced hands, HA filler has a low complication profile. Expected side effects are mild and temporary: swelling (1–3 days), bruising (3–10 days), brief tenderness. We explain honestly the three rare but important risks you should be aware of.
Vascular Occlusion — Rare, But Serious
Vascular occlusion occurs when filler gel enters a blood vessel inadvertently or compresses it from outside, cutting off blood flow. If not treated promptly, this can lead to skin necrosis (tissue death); when vessels supplying the eye are affected, it can — very rarely — result in visual loss. In experienced hands the incidence is very low (in the order of one in many thousands of treatments) but it is not zero.
The highest-risk areas are: glabella (between the brows), nasal dorsum, nasolabial fold (proximity to the facial artery) and tear trough (angular artery).
Early warning signs: Blanching, sharp or disproportionate pain, grey-blue discolouration, or a net-like (livedo) appearance during or immediately after injection. Any of these signs require you to contact the clinic immediately.
Our risk-reduction protocol: Cannula technique preference in high-risk areas, aspiration before injection, slow low-volume injections, continuous monitoring of area colour and patient feedback, and plastic surgery anatomical knowledge informing every step.
Hyaluronidase emergency supply: At Nis Clinic, hyaluronidase — the enzyme that dissolves HA filler — is stocked on every treatment day. If vascular occlusion is suspected, hyaluronidase is injected at high dose into the affected area to dissolve the gel and attempt to restore vascular patency. Agreeing to have HA filler at a clinic that does not stock hyaluronidase means accepting half the safety window has already been closed. This standard is a medical necessity, not a marketing claim.
Hyaluronidase Reversal — Correcting an Unwanted Result
Beyond vascular occlusion, hyaluronidase has a second application: dissolving filler the patient is unhappy with. If a result feels too full, asymmetry is present, or gel has migrated to an unintended area, HA filler can be controlled-dissolved with a hyaluronidase injection. This reversibility is the most important safety feature distinguishing HA filler from permanent alternatives.
Reversal is typically recommended 2–4 weeks after the original treatment; intervening earlier carries the risk of misjudging a result before the gel has fully settled. The hyaluronidase procedure requires a separate consultation and consent process; a test dose is administered given the rare risk of allergic reaction.
Late-Onset Nodules and Tyndall Effect
Late-onset nodule: A palpable firmness or lump appearing weeks or months after treatment. It is usually a low-grade infection or inflammatory response; it is managed with antibiotics, corticosteroid injection or hyaluronidase. It may flare following a systemic viral illness (influenza, COVID-19) — a recognised phenomenon in the literature.
Tyndall effect: A bluish-grey discolouration caused by light scattering through HA gel placed too superficially in thin-skinned areas — particularly the tear trough. It is largely prevented by correct gel selection (a low-viscosity product appropriate for thin skin) and correct depth (deep periosteal placement, via cannula). An established Tyndall effect can be corrected with hyaluronidase. The tear trough is not an area to treat casually.
Filler Use by Facial Area
Each area has its own objectives, gel preferences and technical considerations. A brief guide to the areas we treat most frequently:
- Lips (0.5–1 ml): Vermillion border definition, modest volume. Our policy is a maximum of 1 ml per session for first-time treatments; volumes of 2 ml or more risk a "duck-lip" appearance. Preserving the natural lip border is the foundation of lasting satisfaction.
- Cheeks and mid-face support (1–2 ml per side): Deep periosteal placement of a dense gel (Voluma, Lyft, Ultra Deep) provides natural structural support. Overfilling creates "full cheeks" rather than a defined cheekbone; a staged approach produces a more natural result.
- Jawline (1–3 ml): Oval refinement in women, a sharper contour in men. Dense gel is placed close to the mandibular bone. The area is adjacent to the facial artery; cannula-preferred technique is used.
- Tear trough — under-eye (1 ml): One of the most debated areas. In the right patient it delivers a dramatically refreshed appearance; in the wrong patient it carries the risk of Tyndall effect and prolonged oedema. Our standard: a low-viscosity product appropriate for thin skin (Volbella, Redensity, Belotero Balance) placed deep via cannula along the periosteum. Where prominent orbital fat pads are present, lower blepharoplasty may be recommended instead of filler.
- Nasolabial and marionette lines (1 ml): In most cases the better approach is to treat the source of the problem (mid-face support) rather than filling the line directly. Residual lines are addressed with a medium-density gel for local correction.
- Glabella (between the brows) and nasal dorsum: The two areas carrying the highest risk of vascular occlusion. For glabella lines our preference is botulinum toxin, not filler, as these lines are expression-driven. Nasal dorsum filler is considered only in carefully selected suitable cases after a full risk discussion; in most circumstances the definitive solution is surgical rhinoplasty.
Why Nis Clinic?
There are many clinics offering filler in Northern Cyprus (TRNC). Here are three concrete reasons to choose us.
1) Plastic Surgery Anatomical Expertise — Critical for Vascular Safety
Filler is a procedure that demands knowing exactly where the needle is going. The vascular map of the face, nerve pathways and the safe tissue planes between layers are the foundations of plastic surgery discipline. Op. Dr. İbrahim Meyzin is a Specialist in Plastic, Reconstructive and Aesthetic Surgery and a full member of the Cyprus Turkish Medical Association (CTMA), Registration No. 969. Filler is a medical procedure, not a beautician service. Dr. Meyzin carries out the treatment personally; the model of "technician treats, doctor oversees" is not practised at Nis Clinic.
Full doctor profile: Op. Dr. İbrahim Meyzin
2) Hyaluronidase Emergency Supply — Vascular Occlusion Preparedness
Vascular occlusion is the most serious rare complication of HA filler, and it is a race against time. The current recommendation of leading international specialist societies is that every clinic offering HA filler should have hyaluronidase immediately available at all times.
At Nis Clinic:
- Hyaluronidase is held in the cold chain on every treatment day.
- Our team follows a standardised protocol for early recognition of vascular occlusion signs and prompt intervention with hyaluronidase.
- Patients are monitored via WhatsApp for 24–48 hours after treatment.
This protocol is not a guarantee that nothing will ever go wrong — no clinic in medicine can make that promise. It means being ready when it does. Clinics that treat without this preparation are silently asking their patients to accept an avoidable risk.
3) Transparent, Area-Based Pricing
Filler pricing depends on the area treated, the brand and volume of gel, the technique (cannula option), and any multi-area package advantage. Approximate ranges at Nis Clinic:
- Lip filler (1 ml): €200–€400
- Cheeks and mid-face support (1 ml per side): €300–€500
- Jawline contouring (2–3 ml): €400–€700
- Tear trough — under-eye (1 ml): €350–€550
- Nasolabial and marionette lines (1 ml): €250–€450
- Full face (4–5 areas combined): €800–€1,500
These ranges are wide because we use individually tailored planning, not package pricing. After your consultation, a precise figure is shared with you. The brand, batch number and expiry date of the product to be used are shown to you on the day; the product barcode can be added to your patient record on request. There are no hidden charges.
Related pages: Botulinum toxin (frequently planned together), Mesotherapy, Facelift (surgical alternative for more advanced structural volume loss), Medical Tourism, Op. Dr. İbrahim Meyzin profile, Book a consultation and Contact.
Frequently Asked Questions
How long does dermal filler last?
Which filler brands do you use — Juvederm, Restylane, Teoxane?
What is the risk of vascular occlusion with dermal filler?
Can filler be reversed if I am unhappy with the result?
Which facial areas can be treated with dermal filler?
Can late-onset nodules develop after filler?
What is the Tyndall effect in tear trough filler?
How much does dermal filler cost?
When will I see the result of dermal filler?
Which areas should not be treated with filler?
What is the approximate cost of filler at Nis Clinic?
Is dermal filler treatment painful?
When can I return to work and social life after filler?
Does lip filler look natural, or will I end up with "duck lips"?
Medical Review
Op. Dr. İbrahim MeyzinSpecialist in Plastic, Reconstructive and Aesthetic Surgery, Cyprus Turkish Medical Association (CTMA) Registration No. 969
Specialist in Plastic, Reconstructive and Aesthetic Surgery, Cyprus Turkish Medical Association (CTMA) Registration No. 969
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