Collagen biostimulators are injectable treatments that encourage the skin to produce more of its own supporting tissue over time. They may be considered for selected facial wrinkles, loss of fullness or changes in skin quality, but the right option depends on the product and the problem being treated.
For anyone considering biostimulator treatment in Bangkok, the important differences are the material, treatment area, time needed for results and how difficult an unwanted result may be to correct. Smooth Clinic’s published price catalogue lists Juvelook, Sculptra, Radiesse and HArmonyCa. Their ingredients, evidence and prices are compared below, including what the catalogue does and does not specify.
What is a collagen biostimulator?
“Biostimulator” describes a group of treatments, not one ingredient or brand. Rather than injecting collagen itself, these products use materials such as poly-L-lactic acid (PLLA), poly-D,L-lactic acid (PDLLA) or calcium hydroxylapatite (CaHA) to prompt a tissue response that can include collagen production.
Collagen helps support skin structure. Changes in that support can affect firmness and wrinkles, but facial ageing also involves fat, bone, muscle and skin position. Increasing collagen cannot address every cause of a tired-looking face.
Some biostimulators are also fillers: a gel component may provide early fullness while tissue changes develop more slowly. Others are chosen mainly for gradual improvement. Neither immediate fullness nor early swelling proves that new collagen has already formed.
Which concerns can treatment help?
- Cheek wrinkles or reduced skin firmness: certain products have clinical evidence for these concerns. Match the evidence to the exact product and treatment area.
- Hollow cheeks or loss of facial volume: gradual collagen stimulation or a product with an immediate filling effect may be considered. A precise, local correction may call for an HA filler instead.
- A less defined lower face: volume loss and loose skin need different assessments. Adding fullness is not automatically helpful when the main problem is sagging.
- A full face or double chin: biostimulators do not remove fat. Facial shape can also reflect muscle and bone, so more injectable volume may work against the desired result.
- Expression lines: forehead lines or frown lines caused by muscle movement have a different treatment target from collagen loss.
- Marked sagging or excess skin: injections cannot remove excess skin or reproduce a surgical facelift.
What about pores, acne scars, acne marks and under-eyes?
These are separate problems. Small PDLLA studies have explored skin texture, and a 15-person Juvelook study combined treatment with microneedling for enlarged pores. That study cannot tell us how much improvement came from the product alone. It is not evidence that every biostimulator treats pores or acne scars.
Indented scars require assessment of their type and depth; flat red or brown acne marks are not the same as a loss of tissue. Under-eye concerns may involve hollowness, pigmentation, swelling or loose skin. They require their own assessment, especially because several product labels exclude or lack established safety for the area around the eyes.
Sculptra, Juvelook, Radiesse and HArmonyCa: what is different?
The table describes product evidence, not a prescription or confirmation that every version or treatment area is offered at Smooth Clinic. Overseas instructions explain important differences, but do not establish Thai registration or the suitability of a particular treatment in Thailand.
| Product | Material and practical role | Area and model limits |
|---|---|---|
| Sculptra | PLLA. A gradual approach to selected facial wrinkles and contour deficiencies, rather than a way to judge the final result immediately. | The U.S. label includes cheek wrinkles and nasolabial folds. It advises against use around the eyes and in the red part of the lips. |
| Juvelook | PDLLA plus HA. Standard Juvelook and Juvelook Volume are distinct formulations; evidence for one should not be transferred to the other. | The manufacturer lists standard Juvelook as 50 mg total material and Volume as 200 mg. These are product identities, not recommended patient quantities. The generic clinic catalogue entry does not identify the version. |
| Radiesse / Radiesse (+) | CaHA microspheres in a gel carrier, with early filling and later tissue response. The carrier is not HA. Radiesse (+) contains lidocaine. | U.S. labels distinguish facial-fold use, Radiesse (+) jawline use and non-Plus hand use. A hand indication for one version does not establish it for the other. Safety around the eyes and in the lips is not established. |
| HArmonyCa Lidocaine | A hybrid of cross-linked HA and CaHA, with lidocaine. The HA provides a filling component alongside the CaHA. | The Australian instructions describe facial soft-tissue augmentation and exclude the glabella, periocular area, lips and perioral region. It is not an all-area HA filler. |
How do you choose between them?
Sculptra may enter the discussion when the aim is gradual improvement and a staged plan is acceptable. Standard Juvelook has preliminary skin-quality research, but that is a different evidence base from a larger-volume formulation or a structural contouring treatment.
Radiesse and HArmonyCa may enter the discussion when early fullness or support is part of the goal. The key question is whether additional volume is desirable in the proposed area. Brand origin, the word “hybrid” and a longer advertised duration do not by themselves identify the best option.
Other products marketed as biostimulators may use different polymers or formulations. A list of materials is not proof that they have the same uses, studies or availability at this clinic.
Biostimulator, HA filler, skin booster or a lifting treatment?
| Main priority | Option to compare | Important distinction |
|---|---|---|
| A specific hollow, contour or crease | HA filler | HA gels can give an early filling effect. Hyaluronidase can break down HA, although correction is a medical procedure with its own risks and limits. |
| Skin smoothness or hydration-related concerns | Product-specific skin boosters | “Skin booster” is a broad label. The material and studied purpose matter more than the category name. |
| Lines caused by facial movement | Botulinum toxin treatment | It acts on muscle activity; a biostimulator does not directly replace that action. |
| Skin laxity without a need for more fullness | Ultrasound lifting or an appropriate energy-based treatment | These use energy rather than adding injectable material. Suitability and achievable change still depend on the degree of laxity. |
| Substantial excess skin or tissue descent | A surgical assessment | Repeated injections are not a substitute for removing or repositioning excess tissue when surgery is the appropriate option. |
Profhilo uses complexes of high- and low-molecular-weight HA. Its “hybrid” terminology does not mean the same formulation as HA plus CaHA. Rejuran’s manufacturer identifies PN, or polynucleotide, with a purpose of temporary improvement in facial wrinkles; it is not PLLA, PDLLA or CaHA.
Exosome products are another category entirely. They should not inherit the evidence of an established filler. The U.S. FDA has warned about unapproved exosome products; that warning is not a determination of the Thai regulatory status of an unidentified product.
These comparisons help define the goal. They do not mean that every treatment is available here, that combining them is necessary, or that one category is universally safer.
Who may be suitable, and when should treatment be postponed?
A suitable candidate has a concern the chosen product can reasonably address, realistic expectations and time for recovery and reassessment. Age alone is not a treatment plan. Men and women, and people with leaner or fuller faces, need assessment of the same practical issues: anatomy, skin condition, existing volume and the desired degree of change.
Do not proceed with a product if you have a known allergy to its ingredients. Lidocaine or related local-anaesthetic allergy also matters when these are included. Tell the doctor about anaphylaxis, multiple severe allergies, previous injectable reactions and any tendency to form raised scars.
- Inflamed or infected skin: postpone injection into an area with active infection, sores or inflammation until it has been assessed and treated.
- Pregnancy or breastfeeding: elective treatment is generally deferred because safety is not established for several products; some labels specifically contraindicate use.
- Raised-scar tendency: Sculptra’s U.S. label excludes people with a history of keloids or hypertrophic scarring.
- Bleeding disorders: Radiesse and Radiesse (+) list these as contraindications. Medication that affects clotting also needs review.
- Autoimmune illness, impaired healing or immunosuppressive treatment: rules differ. HArmonyCa’s Australian instructions, for example, list autoimmune disease among its contraindications.
- Previous injections or existing lumps: the doctor needs to identify what is already present before considering more material.
This is not a complete contraindication list. The treating doctor should check the exact locally supplied product’s instructions against your history. Do not stop anticoagulants, aspirin or other prescribed medicines yourself to make an appointment possible.
How many sessions are needed, and when will results appear?
Separate the recovery period from the time needed for tissue change. Early swelling can settle before a gradual result becomes noticeable. One session is not necessarily a complete course, and a study schedule is not automatically Smooth Clinic’s treatment plan.
| Product | What the evidence says about timing | What it does not promise |
|---|---|---|
| Sculptra | The manufacturer describes an average of two to three sessions over several months, with many study participants noticing change around one month. The cheek-wrinkle trial allowed up to four sessions at four-week intervals and followed outcomes through 24 months from the first treatment. | One injection lasting two years for everyone. The evidence concerns a treatment plan, a particular area and measured outcomes. |
| Standard Juvelook | A preliminary study of 16 adults used two or three sessions four weeks apart, with a final assessment 12–16 weeks after the last session. Researchers used additional HA and a study-specific method. | A proven one- or two-year duration, a result from one session, or the same outcome with Juvelook Volume. The study was small, uncontrolled and manufacturer-funded. |
| Radiesse | Its gel can create early correction. A facial-fold study followed patients beyond the initial treatment period; retreatment was offered at 6–12 months. Some improvement remained in some patients assessed at least 30 months after their last injection. | A fixed three-year result from one treatment. This was a selected extension group, with retreatment context, not a guarantee for every model or area. |
| HArmonyCa | A prospective, non-randomised study of 15 women assessed a single treatment in the area in front of the ears. Photographs and imaging tracked changes over six months. | A standard number of annual treatments or a guaranteed expiry date. Six months was the study’s follow-up window, and imaging is not proof of a specified percentage increase in collagen. |
If initial fullness fades, it may reflect settling swelling or changes in the carrier rather than failure. If the result seems insufficient, compare photographs under similar conditions and review the original goal, elapsed time and material used before adding more.
A review appointment, another treatment session and later maintenance are different decisions. A staged plan can allow reassessment before further treatment; whether that can be purchased session by session depends on the actual package terms. There is no universal requirement to buy a full course or repeat treatment every year.
How many vials, syringes or cc will I need?
There is no reliable “one vial per decade of age” or standard full-face quantity for this mixed group. The amount depends on the specific formulation, areas, degree of volume loss, skin thickness, previous material and whether the aim includes added fullness.
A vial, a box and a syringe describe packaging; cc and mL describe volume. A powder-based product prepared for use cannot be compared directly with a ready-made gel by cc alone. More preparation fluid does not mean more collagen-stimulating material.
A usable plan identifies the exact model, original pack size, number of units for each visit and expected number of visits. That is also the information needed to compare costs. A published package quantity is not a recommendation that your face needs that quantity.
Biostimulator prices at Smooth Clinic
The following price ranges appear in the official Smooth Clinic price list (Thai), checked on 15 October 2026. Each range spans catalogue listings with different quantities whose exact sale units are not fully explained.
| Catalogue programme | Displayed price range (THB) |
|---|---|
| Juvelook | 14,990–29,900 |
| Sculptra | 29,900–75,000 |
| Radiesse | 34,990–59,900 |
| HArmonyCa | 34,990–49,900 |
These are catalogue ranges, not per-cc prices or complete-course quotes. The listings do not fully establish the sale unit, pack size or number of visits. The Radiesse brand entry does not resolve the exact supplied version; the Juvelook entry does not confirm standard versus Volume.
Comparing total cost and value
Compare a written plan for the same concern: the exact product and quantity at each planned visit, the expected number of visits, and any separately charged assessment, anaesthetic, follow-up or further treatment.
The relevant catalogue entries do not specify all inclusions, eligibility, validity dates, deposits, cancellation or rescheduling terms. Confirm those before paying. A lower advertised unit price is not automatically better value if it represents a different amount, formulation or incomplete plan.
What should I prepare before an appointment?
Photographs of the change you want to address can help explain the goal without choosing a product in advance.
Tell the doctor about persistent swelling or lumps, herpes outbreaks, recent infection, dental work and planned skin treatments. These details can change the timing or choice of treatment. If you do not know what was injected previously, assessment should come before booking more injections in the same area.
For English-speaking residents, arrange a consultation in a language you understand and make sure you can understand consent and aftercare instructions. Do not assume that every appointment has the same language support. Also plan how you will reach medical help if you are away from Bangkok after treatment.
Does it hurt, and what happens during treatment?
Expect an assessment and discussion of the proposed product, area, likely benefit, alternatives, risks and total price before deciding. Packaging and product details should be checked before use. Skin preparation and pain relief are then selected for the procedure; injection can cause stinging, pressure or tenderness even with anaesthetic.
Radiesse (+) and HArmonyCa Lidocaine contain lidocaine. Other pain-control arrangements depend on the product and patient, including any allergy. Tell the clinician immediately about unusual or severe pain; it should not simply be accepted as part of treatment.
The American Society of Plastic Surgeons gives a broad estimate of 15 minutes to an hour for filler treatment depending on the areas involved. That is a general reference, not a confirmed Smooth Clinic appointment length. Assessment, preparation and instructions may require additional time.
Before leaving, you should have written product-specific care, the planned review point and a clear contact route for concerns. These are appropriate checks for any provider, rather than a claim that an identical workflow applies to every appointment here.
Recovery, massage and everyday activities
Temporary swelling, bruising, redness, needle marks and tenderness are possible. Many early reactions improve over days, but bruising can remain visible for longer and some reactions need assessment. Being able to work does not necessarily mean being ready for a close-up photograph.
Do I need to massage the area?
Do not apply one brand’s routine to all products. Sculptra’s patient instructions include five minutes of massage, five times daily, for five days. Use the technique demonstrated by your treating clinician.
That routine is not a universal instruction for Juvelook, Radiesse or HArmonyCa. Follow the instructions for the actual treatment. A new painful, red or persistent lump needs assessment rather than vigorous self-massage or a home attempt to dissolve it.
When can I wear makeup, exercise or use a sauna?
Sculptra’s patient information allows makeup after several hours when there are no complications, open wounds or bleeding. Radiesse’s guidance limits strenuous activity and extensive sun or heat for about 24 hours and until swelling or redness resolves. HArmonyCa’s Australian instructions specify no makeup in the treated area for 12 hours before and after treatment, plus 24-hour activity and exposure precautions.
Those are product-specific examples, not an all-brand timetable. Keep puncture sites clean, avoid rubbing irritated skin and wait to apply makeup over any unhealed site. Postpone saunas or intense exercise while the relevant restriction applies or the area remains inflamed. If skincare stings, pause the irritating product and seek advice if irritation persists.
Are there food, alcohol or sleeping restrictions?
The sources cited here do not establish one forbidden-food list or a fixed number of nights sleeping on your back for all biostimulators. Eat normally according to your health needs and avoid known allergens. Avoid uncomfortable pressure on tender areas and follow any additional instructions for combined procedures.
Alcohol is best avoided while you are significantly bruised or swollen, and it may be unsuitable with medicines prescribed after treatment. Do not use it to manage injection anxiety or pain.
Can I fit treatment around work, travel or an event?
Leave room for visible bruising and follow-up, not just the injection appointment. Avoid scheduling immediately before an important event or travel that makes medical review difficult. The time needed for gradual collagen-related improvement can be weeks to months, even after early swelling has settled.
What are the risks, and which symptoms are urgent?
Beyond temporary injection-site reactions, complications can include infection, allergy, persistent lumps, inflammatory nodules or granulomas. Delayed inflammation can appear well after treatment. An authentic product and a qualified clinician reduce avoidable risks but cannot make an injection risk-free.
A lump may represent swelling, product placement or inflammation; these need different responses. Contact the treating clinician for persistent or enlarging lumps, increasing redness, warmth, discharge, fever or worsening pain. Do not squeeze the area, puncture it or inject a “dissolver” yourself.
Get immediate medical help for warning signs
Severe or unusual pain, pale or grey-blue skin, a spreading mottled colour change, or any visual disturbance can indicate a serious vascular complication. Accidental injection into a blood vessel can injure skin and, rarely, cause blindness or stroke.
Seek emergency care immediately for vision changes, sudden weakness, facial drooping, difficulty speaking, breathing difficulty or swelling of the lips or tongue. Do not wait for a routine clinic reply. In Thailand, call 1669 for emergency medical assistance.
Can a biostimulator be dissolved if I dislike the result?
Not in the same way as an HA-only filler. Hyaluronidase breaks down HA; it does not provide an equivalent reversal for PLLA, PDLLA or CaHA particles. A product being biodegradable means it can break down over time, not that a clinician can immediately remove it on demand.
HA-containing hybrids still contain another material. Dissolving an HA component would not remove the CaHA in HArmonyCa or the PDLLA in Juvelook, nor reverse tissue already produced. Even HA-filler correction can require more than one treatment and carries risks.
If the result is too full, uneven or uncomfortable, assessment should distinguish early swelling from an unwanted treatment effect or complication. Management depends on the material and cause and may be prolonged. This limitation is worth considering before treatment if reversibility is a high priority. Read more about HA filler dissolution and its limits.
Can it be combined with Botox, filler or a lifting device?
Sometimes different treatments address different parts of the same concern, but that is a reason to plan carefully, not automatically buy a combined package. The exact material, location, existing injections and device determine whether procedures should be separated and in what order.
There is no single safe interval for every combination. For example, HArmonyCa’s Australian instructions call for at least four weeks between its use and ultrasound, laser or peeling treatments. This does not create a four-week rule for every biostimulator, device or patient.
Give each treating clinician the same procedure history. If old material is unknown or there is an unresolved lump, identify the problem before layering further treatment over it.
Checking the product, doctor and clinic evidence
Verify the exact product and model, intact packaging, expiry date, lot number and authorised supply route. Check the specific product’s Thai regulatory listing rather than relying on a general claim that the brand is “FDA approved.” A U.S. approval or an overseas package image does not prove Thai registration or authenticate the item being used.
A QR code is useful only when it leads to the manufacturer’s or authorised distributor’s genuine verification service. Keep the product details with your treatment record. If the product, source or quantity cannot be clearly identified, postpone the decision.
Smooth Clinic publishes a doctor directory. Check the proposed treating doctor’s identity, registration and relevant training; an article reviewer is not necessarily the person who will inject you. Agree on how follow-up and urgent concerns will be handled, including when the clinic is closed.
How useful are before-and-after photographs?
The clinic’s biostimulator review gallery provides examples to discuss during assessment. Compare cases with a similar concern and look for the exact product, number of sessions and time since treatment. Lighting, expression, makeup and additional procedures can affect the comparison.
An immediate photograph includes early filling or swelling; it cannot demonstrate newly formed collagen. Published photographs are not a prediction of your result and do not, by themselves, establish the dose, full treatment history or long-term durability.
Other questions before deciding
Will my face look bigger?
It can look fuller if adding volume is part of the treatment, and early swelling can temporarily exaggerate that effect. Discuss a goal of avoiding added fullness before choosing a product. Persistent enlargement or a distinct lump should be assessed rather than assumed to be normal collagen growth.
Can I stop after treatment, or do I have to keep going?
You can decide against further elective treatment. Results and the underlying ageing process change over time; stopping does not create an obligation to buy another course. However, follow-up may still be important, especially for an incomplete plan or any side effect.
What if I need an immediate result with no downtime?
A collagen-dependent treatment is a poor match for a guaranteed immediate result. Products with early filling effects still involve swelling, bruising and complication risks. If you cannot allow any visible recovery or access follow-up, postponing treatment may be the more practical choice.
Book a biostimulator assessment in Bangkok
Start with the change you want to see, such as cheek wrinkles, reduced firmness or hollowing, rather than choosing a number of vials yourself.
Contact Smooth Clinic through its booking and directions page or call 088-121-8888. The clinic lists its address at Times Square, 2nd Floor, Sukhumvit Road, near Asoke BTS and Sukhumvit MRT. Confirm appointment availability, communication needs and payment terms before arranging your visit.
Sources and further reading
- U.S. FDA: Sculptra cheek-wrinkle approval and contraindications; Sculptra instructions for use; manufacturer patient questions; patient information.
- VAIM: Juvelook product formulations; Seo et al., 2024: preliminary PDLLA/HA skin-rejuvenation study; Wan et al., 2025: combined microneedling/PDLLA pore study.
- Radiesse manufacturer information and safety; Radiesse (+) instructions; facial-fold patient guide; Bass et al., 2010: long-term facial-fold study.
- HArmonyCa Lidocaine: Australian instructions for use; Urdiales-Gálvez et al., 2023: six-month HArmonyCa study.
- U.S. FDA: filler risks and warning signs; FDA dermal-filler panel review, including removal limitations.
- IBSA: Profhilo composition; PharmaResearch: Rejuran composition; FDA exosome safety notification.
- Thailand government: emergency medical contact number; DailyMed: hyaluronidase mechanism.
- American Society of Plastic Surgeons: filler procedure; botulinum toxin overview; Ultherapy manufacturer information; ASPS: surgical and non-surgical treatment differences.