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About Bavary Clinic

Discover the people, places and principles behind Bavary Clinic.

Learn more about our team, our approach to care and the story behind our London and Sligo clinics.

Skin / Face Treatments

Biostimulators

Collagen-focused and regenerative skin-quality treatments, including Rejuran, Juvelook and Lenisna. These products work differently, so we assess the relevant concern, product-specific evidence and anatomical suitability before choosing an approach to texture, elasticity or gradual rejuvenation.

Overview

Biostimulators are injectable treatments used with the aim of improving aspects of skin quality or supporting gradual tissue remodelling. Bavary Clinic's options include Rejuran for the face or face and neck, and the PDLLA-based Juvelook and Lenisna treatments. They differ in formulation, intended effect and clinical evidence.

Your practitioner will discuss whether hydration, texture, elasticity or volume-related changes are your main concern, and which approach may be appropriate. Improvements are generally gradual, while results and risks vary by product and individual. Biostimulator consultations and treatments are available in Harrow, London and Sligo, Ireland.

Available treatment options

A polynucleotide-based injectable option intended for selected facial skin-quality concerns, including fine lines and texture. Research in aesthetic use is developing, and the evidence for precise outcomes and optimal protocols remains limited.

Your practitioner will confirm the exact Rejuran preparation and explain injection-related swelling, bruising or nodules. The goal is gradual improvement in selected skin attributes, not immediate structural reshaping or guaranteed restoration.

A course of 3 appointments for Rejuran – Face Rejuvenation, offered at the published course price. Each listed duration refers to one appointment, not the complete course.

The appropriate interval and whether every session is suitable are determined by the chosen product or procedure and your individual response. A course does not promise a fixed cosmetic or clinical outcome; progress and any side effects are reviewed as treatment proceeds.

A polynucleotide-based treatment designed to consider skin-quality concerns over both the face and neck. Extending treatment to the neck changes the anatomy and extent of the procedure; skin thickness, laxity and previous injections influence suitability.

The product, intended treatment level and course must be confirmed clinically. Results vary and should not be compared with surgical lifting, while injection-site reactions and rare complications remain relevant.

A course of 3 appointments for Rejuran – Face & Neck, offered at the published course price. Each listed duration refers to one appointment, not the complete course.

The appropriate interval and whether every session is suitable are determined by the chosen product or procedure and your individual response. A course does not promise a fixed cosmetic or clinical outcome; progress and any side effects are reviewed as treatment proceeds.

A collagen-focused injectable marketed as combining poly-D,L-lactic acid particles with hyaluronic acid. It is discussed for selected concerns involving gradual textural or elasticity change rather than instant structural augmentation.

The exact product directions, treatment area and injection technique matter, and gradual tissue response cannot be guaranteed. Bruising, inflammatory reactions and delayed nodules require proper counselling, particularly where previous injectables are present.

A course of 3 appointments for Juvelook – Collagen Biostimulator, offered at the published course price. Each listed duration refers to one appointment, not the complete course.

The appropriate interval and whether every session is suitable are determined by the chosen product or procedure and your individual response. A course does not promise a fixed cosmetic or clinical outcome; progress and any side effects are reviewed as treatment proceeds.

A branded PDLLA-related biostimulatory injectable intended for a carefully selected, gradual tissue response. It differs from both conventional hydration boosters and other PDLLA-labelled products in its formulation and proposed use.

Your practitioner will assess anatomy, prior injectables, the exact product instructions and the limits of expected improvement. Potential risks include infection, swelling, unevenness and delayed inflammatory nodules. It should not be described as a guaranteed non-surgical facelift.

A course of 3 appointments for Lenisna – Collagen Biostimulator, offered at the published course price. Each listed duration refers to one appointment, not the complete course.

The appropriate interval and whether every session is suitable are determined by the chosen product or procedure and your individual response. A course does not promise a fixed cosmetic or clinical outcome; progress and any side effects are reviewed as treatment proceeds.

More information

Explore the clinical considerations, preparation, results and recovery associated with biostimulators.

A consultation establishes whether the main concern is texture, hydration, laxity or volume, with review of prior injectables and relevant history. We explain the specific product, planned areas, possible preparation and how its intended results differ from immediate filler-like change.

A suitable injectable is administered according to product guidance and individual anatomy in an appropriate clinical setting. The appointment is guided by your specific concern, and the practitioner should discuss what will and will not be achieved. We review gradual changes and any injection-site concerns before considering further treatment or maintenance.

Biostimulation is often used to describe injectable materials intended to influence tissue responses over time. It should not be confused with the immediate water-binding effect of a moisturiser or the structural augmentation of a conventional volume filler. Products marketed as biostimulators can have very different compositions, particle characteristics and indications.

A safe consultation must identify the exact preparation and explain what evidence supports its use in the intended area. Biostimulatory injectable treatments vary by product; data on polynucleotides and particular PDLLA formulations are not equally mature or directly comparable.

The decision begins with a review of your medical history, prior reactions, treatment aims and the condition of the area being considered. Active infection, significant inflammatory disease, hypersensitivity to product components, pregnancy or breastfeeding, abnormal scarring, prior filler reactions and relevant medicines may alter suitability.

Particle-based injectables may cause delayed nodules or inflammatory reactions. Injection technique and product-specific restrictions must be verified. If the likely benefit does not justify the risks or another condition should be addressed first, postponement or an alternative can be recommended.

Biostimulator suitability is not determined by skin colour alone. Anatomy, prior fillers or biostimulators, inflammatory history, scarring and the exact injection product are crucial. Delayed nodules can occur with some particle-based materials, and treatment in thin or highly mobile areas requires particular judgement.

Skin pigment changes after bruising or inflammation may also influence planning and follow-up. The practitioner should explain why the chosen protocol is appropriate for your individual tissue and history, rather than rely on a broad promise of universal suitability.

The concerns we may discuss include fine lines, loss of elasticity, crepey skin, uneven texture, skin quality, face & neck rejuvenation and selected skin laxity. Rejuran is associated with polynucleotide formulations used in skin-quality protocols.

Polynucleotides are fragments or chains of nucleic acids investigated for biological activities relevant to tissue repair. Early aesthetic studies suggest potential effects on texture and elasticity, but systematic reviews describe small, varied studies and limited certainty about optimal protocols.

A face-and-neck plan differs in area and dose from a facial plan, but neither should be described as proven to replace surgery or restore lost facial volume. Not every listed concern is an indication for every option in the group, and an appropriate outcome depends on identifying the actual cause.

Injection appointments involve brief needle discomfort, pressure or tenderness. Local anaesthetic or other comfort measures depend on the product and area. Some patients experience small raised deposits or temporary swelling.

Pain that is severe, progressive or accompanied by unusual skin colour is not an expected routine reaction and requires prompt assessment. Comfort measures and any unexpected symptoms should be explained before treatment so that you know what is normal and when to speak up.

We explain the specific product, planned areas, possible preparation and how its intended results differ from immediate filler-like change. Active infection, significant inflammatory disease, hypersensitivity to product components, pregnancy or breastfeeding, abnormal scarring, prior filler reactions and relevant medicines may alter suitability.

Particle-based injectables may cause delayed nodules or inflammatory reactions. Injection technique and product-specific restrictions must be verified. Tell your practitioner about pregnancy where relevant, prescriptions, supplements, recent procedures and any change in your health. Do not stop prescribed medicines without advice from the relevant prescriber.

Redness, bruising, tenderness or swelling can occur after injections, with the extent varying by product, amount and location. Some particle-based injectables can cause delayed lumps or inflammatory reactions. Because biostimulation is an intended gradual tissue response, immediate swelling should not be assessed as the final result.

Product-specific massage or aftercare instructions must not be generalised across brands. The practitioner will outline the response expected after your particular option, since treatments within one group may have very different healing profiles.

Temporary swelling or bruising may occur; aftercare and warning signs are explained for the actual product used. Redness, bruising, tenderness or swelling can occur after injections, with the extent varying by product, amount and location. Some particle-based injectables can cause delayed lumps or inflammatory reactions.

Because biostimulation is an intended gradual tissue response, immediate swelling should not be assessed as the final result. Product-specific massage or aftercare instructions must not be generalised across brands. Please contact the clinic if symptoms are more severe or last longer than the plan explained at consultation; urgent symptoms should be assessed without delay.

Products in this group aim for gradual changes in selected skin-quality or tissue-support parameters rather than guaranteed immediate transformation. A preliminary improvement may reflect swelling or hydration, while a biostimulatory effect is expected to develop over a longer period.

The evidence for exact magnitude and durability differs markedly between Rejuran, Juvelook and Lenisna. No treatment can guarantee lifting comparable with surgery. An individual assessment can help distinguish meaningful change from temporary swelling or surface effects.

The menu offers individual appointments and three-session courses for several products. That commercial structure does not replace product-specific protocols, required intervals or reassessment. Some effects may be delayed, making early repeat treatment inappropriate.

The practitioner should explain whether further sessions are reasonable after reviewing response and any complications. Where a course price is offered, that is an optional booking structure rather than a promise of suitability or guaranteed results.

Active infection, significant inflammatory disease, hypersensitivity to product components, pregnancy or breastfeeding, abnormal scarring, prior filler reactions and relevant medicines may alter suitability. Particle-based injectables may cause delayed nodules or inflammatory reactions. Injection technique and product-specific restrictions must be verified.

Biostimulatory injectable treatments vary by product; data on polynucleotides and particular PDLLA formulations are not equally mature or directly comparable. Risks differ by formulation, treatment area, operator technique and medical history. The practitioner should identify the specific risks most relevant to you and discuss alternatives before consent.

For primarily dehydrated skin, a hyaluronic acid-focused skin booster or skincare adjustments may be more relevant. Structural hollowing may need an entirely different anatomical discussion; superficial texture may be addressed with selected microneedling or resurfacing.

Significant laxity may not respond sufficiently to injectables, and no procedure is mandatory when the predicted gain is small. The best alternative may also be to delay a procedure while a skin, scalp or medical condition is properly investigated.

Products in this group aim for gradual changes in selected skin-quality or tissue-support parameters rather than guaranteed immediate transformation. A preliminary improvement may reflect swelling or hydration, while a biostimulatory effect is expected to develop over a longer period. The evidence for exact magnitude and durability differs markedly between Rejuran, Juvelook and Lenisna.

No treatment can guarantee lifting comparable with surgery. Biostimulatory injectable treatments vary by product; data on polynucleotides and particular PDLLA formulations are not equally mature or directly comparable. Some concerns require a different modality, longer-term management or medical referral, and not every desired change is achievable through an aesthetic treatment.

Understanding Biostimulators in more detail

A considered guide to the science, available options, realistic outcomes and clinical decisions behind biostimulators.

What the term biostimulator means

Biostimulation is often used to describe injectable materials intended to influence tissue responses over time. It should not be confused with the immediate water-binding effect of a moisturiser or the structural augmentation of a conventional volume filler.

Products marketed as biostimulators can have very different compositions, particle characteristics and indications. A safe consultation must identify the exact preparation and explain what evidence supports its use in the intended area.

Rejuran and polynucleotide-based treatment

Rejuran is associated with polynucleotide formulations used in skin-quality protocols. Polynucleotides are fragments or chains of nucleic acids investigated for biological activities relevant to tissue repair. Early aesthetic studies suggest potential effects on texture and elasticity, but systematic reviews describe small, varied studies and limited certainty about optimal protocols.

A face-and-neck plan differs in area and dose from a facial plan, but neither should be described as proven to replace surgery or restore lost facial volume.

Juvelook and PDLLA-based particles

Juvelook is commonly described as a hybrid combination of poly-D,L-lactic acid (PDLLA) and hyaluronic acid. The particle component is associated with a gradual tissue response, while the hyaluronic acid component provides different physical properties.

Claims about treatment duration and mechanism should be linked to the exact version and authorised instructions. Injection placement, reconstitution and patient selection are clinically important because particle-based products may produce nodules or other inflammatory complications.

Lenisna and the question of structural support

Lenisna is another branded PDLLA-related injectable within the broad collagen biostimulator category. Its role should not be inferred solely from experience with Juvelook: formulations and intended applications differ.

Patients considering a larger-area or deeper treatment need a clear explanation of the anatomical plan, expected gradual effect and what is not realistic. No product should be promoted as a guaranteed non-surgical facelift.

Collagen, ageing and realistic expectations

Collagen is one component of the skin’s extracellular matrix, and its organisation changes with age, sun exposure and other factors. The concept of stimulating collagen is attractive, but it does not prove that any injection produces an identical improvement in every patient.

Fine lines, poor skin texture, substantial laxity and lost volume have different structural causes. A treatment appropriate for one may have limited effect on another.

A course versus a single session

Some biostimulator protocols are organised as courses with intervals intended to allow tissue response. The correct number of treatments is product-specific and patient-specific.

A course price is a commercial option, not a clinical guarantee that a fixed schedule is suitable for everyone. Improvement may become more apparent over weeks or months, and any later maintenance should depend on assessment rather than an automatic repeat booking.

Skin tones, inflammation and injection risks

Injectables are not restricted to one Fitzpatrick phototype, but skin pigmentation history, inflammation and scarring tendencies remain relevant. Bruising and swelling are common procedural possibilities; infection, nodules, unevenness and other complications require serious consideration.

Patients should understand the product and its intended injection plane, especially if they have had previous fillers or injections in the same area.

Biostimulators compared with skin boosters

Skin boosters often centre on hydration and texture, while some biostimulators aim for a longer-term tissue response. The distinction is not absolute because individual formulations can combine mechanisms, but it is important to avoid treating all injectables as interchangeable.

Skinvive, Profhilo, Rejuran, Juvelook and Lenisna have different compositions and directions for use. An assessment should establish the underlying concern before deciding which, if any, is suitable.

Choosing between the treatments offered at Bavary Clinic

Our menu includes Rejuran – Face Rejuvenation; Rejuran – Face & Neck; Juvelook – Collagen Biostimulator; Lenisna – Collagen Biostimulator. A choice between these offerings should be made according to the concern, underlying anatomy, skin or scalp condition and the evidence for the actual procedure, rather than the assumption that the more expensive option is necessarily more effective.

In particular, the intended purpose of an adjunct or a branded product should be explained separately from the main procedure. You should understand exactly what is included in an appointment, whether a course is recommended and how the practitioner would judge whether treatment is helping. Treatment prices and course options are stated separately in the menu, but the choice to proceed, timing and any repeat sessions remain subject to clinical suitability.

How to make an informed treatment decision

At consultation, it is useful to explain which change matters most to you, what you have already tried and how much recovery you can accommodate. Concerns such as fine lines; loss of elasticity; crepey skin; uneven texture; skin quality are related but do not necessarily have the same underlying cause.

Ask why the proposed option is preferable to an alternative, what a realistic improvement would look like for your individual situation, and which changes are unlikely. Also discuss any medications, skin or scalp conditions, allergies, previous procedures and history of pigmentation or poor healing. A confident recommendation should include circumstances in which the treatment would be delayed or declined.

Evidence, aftercare and long-term expectations

Biostimulatory injectable treatments vary by product; data on polynucleotides and particular PDLLA formulations are not equally mature or directly comparable. Active infection, significant inflammatory disease, hypersensitivity to product components, pregnancy or breastfeeding, abnormal scarring, prior filler reactions and relevant medicines may alter suitability. Particle-based injectables may cause delayed nodules or inflammatory reactions. Injection technique and product-specific restrictions must be verified. A published study of a device or ingredient does not necessarily establish the same results for every product, protocol, skin type or anatomical area.

Where treatment is appropriate, the practitioner should explain the expected sequence of recovery, how to care for the treated area and what signs merit prompt medical review. Outcomes vary and may need time to become clear. Further appointments should be based on the observed response and an updated assessment rather than a guarantee that a particular number of sessions will deliver a fixed result.

The Bavary Approach™

The Bavary Approach to Biostimulators

“Regenerative treatments deserve evidence as well as enthusiasm.”

Biostimulator treatment is not selected by product popularity alone. Our practitioners first consider whether your concern relates mainly to hydration, texture, elasticity or actual structural volume. They then assess anatomy, prior injectables, skin condition and the implications of using a product that may produce gradual tissue effects.

Rejuran, Juvelook and Lenisna are not interchangeable, and their formulation, evidence, manufacturer directions and suitability need to be considered separately. We explain that collagen-related improvements develop over time and cannot be guaranteed, while injection complications may require follow-up. A considered plan may involve one option, a different skin-quality approach or no injectable treatment.

Transparency is especially important when marketing language moves faster than clinical evidence. Your practitioner will explain the reasoning behind the recommendation, what recovery involves and which circumstances could make a different approach more suitable. We welcome questions before any decision is made.

Your treatment journey

Your journey is tailored to the treatment, your needs and the recommendations made during assessment.

01

Consultation

A consultation establishes whether the main concern is texture, hydration, laxity or volume, with review of prior injectables and relevant history.

Your practitioner will discuss a realistic goal and explain when another approach would be safer or more effective.

02

Preparation

We explain the specific product, planned areas, possible preparation and how its intended results differ from immediate filler-like change.

You will have an opportunity to ask questions before proceeding and to understand any preparation specific to the selected option.

03

Treatment

A suitable injectable is administered according to product guidance and individual anatomy in an appropriate clinical setting.

Technique and comfort measures vary by treatment, and the clinical team should explain the process rather than assume every patient has the same experience.

04

Aftercare

Temporary swelling or bruising may occur; aftercare and warning signs are explained for the actual product used.

The guidance includes when to contact the clinic if the response differs from what was anticipated.

05

Review

We review gradual changes and any injection-site concerns before considering further treatment or maintenance.

A further procedure is never automatic simply because a course is advertised; your response and suitability remain important.

Why we may not recommend treatment

Not every treatment is appropriate for every patient. Active infection, significant inflammatory disease, hypersensitivity to product components, pregnancy or breastfeeding, abnormal scarring, prior filler reactions and relevant medicines may alter suitability. Particle-based injectables may cause delayed nodules or inflammatory reactions. Injection technique and product-specific restrictions must be verified.

Biostimulator suitability is not determined by skin colour alone. Anatomy, prior fillers or biostimulators, inflammatory history, scarring and the exact injection product are crucial. Delayed nodules can occur with some particle-based materials, and treatment in thin or highly mobile areas requires particular judgement. Skin pigment changes after bruising or inflammation may also influence planning and follow-up.

Our experienced practitioners review relevant medical history, allergies, skin or scalp condition, previous treatments and your expectations before proceeding. Biostimulatory injectable treatments vary by product; data on polynucleotides and particular PDLLA formulations are not equally mature or directly comparable. Any unexpected symptoms after a procedure should be assessed promptly; your practitioner will explain specific warning signs, alternatives and when treatment should be delayed or declined.

Our locations

Biostimulators at Bavary Clinic

Discover where this treatment is currently available. Every recommendation begins with an individual consultation and suitability assessment.

London

Harrow, North West London

Available at our Harrow clinic, welcoming patients from Pinner, Stanmore and surrounding North and West London communities.

Explore our London clinic
Ireland

Sligo, Ireland

Available at our Sligo clinic, welcoming patients from Sligo town and neighbouring communities across County Sligo.

Explore our Sligo clinic

Frequently asked questions

General guidance only. Your practitioner will explain what applies to you and the treatment being considered.

Rejuran products are associated with polynucleotide-based skin-quality approaches, while Juvelook is marketed as combining a PDLLA-based component with hyaluronic acid. Their intended effects, product instructions and evidence are not identical.

Neither can be described as universally better; selection depends on whether the main aim is texture, elasticity or another carefully assessed concern.

Some immediate swelling or temporary change may occur, but a proposed biostimulatory effect typically develops over a longer period as tissue responds.

The timing and extent vary by formulation, area and individual. Course pricing does not guarantee that a fixed number of sessions will achieve a particular result.

Yes. Injectable treatments can cause bruising, swelling and infection, and some particle-based products have a particular concern regarding delayed nodules or inflammatory reactions.

A history of previous injectables, product selection and anatomical placement all matter. Ask how potential complications would be assessed and managed before agreeing to treatment.

You can book biostimulators at Bavary Clinic, 138 Kenton Road, Harrow, HA3 8AZ, in North West London. Our clinic welcomes patients from Harrow, Kenton, Northwick Park, Harrow-on-the-Hill, Wealdstone, Harrow Weald, Belmont, Queensbury, Kingsbury, Stanmore, Pinner, North Harrow, South Harrow, West Harrow, Rayners Lane and Hatch End.

We also see patients travelling from Northwood, Ruislip, Wembley, Wembley Park, Sudbury, Edgware, Bushey, Watford, Greenford, Ealing, Brent and Barnet, as well as elsewhere across North and West London. Bavary Clinic is not limited to local residents: we warmly welcome patients from across London and the whole of the United Kingdom, including those travelling from further afield for a considered consultation.

You can book biostimulators at Bavary Clinic, Office 9, Wine Street, Rathedmond, Sligo, F91 CC01, Ireland. We welcome patients from Sligo town, Strandhill, Rosses Point, Drumcliffe, Grange, Collooney, Ballysadare (Ballisodare), Ballymote, Tubbercurry, Enniscrone, Easkey, Riverstown, Coolaney and Gurteen.

Patients also travel from Ballina, Boyle, Manorhamilton, Bundoran and Ballyshannon, and across counties Donegal, Leitrim and Roscommon and the wider North-West of Ireland. Our Sligo clinic is open to more than the surrounding communities: Bavary Clinic welcomes patients from throughout Ireland, including those choosing to travel from other counties for personalised aesthetic and skin treatments.

A considered next step

Arrange a consultation at Bavary Clinic in Harrow or Sligo to explore biostimulators with our experienced team. We will discuss your concerns, explain suitable options and help you make an informed decision without pressure.

Book an Appointment