
Collagen Stimulation: How Radiesse Works to Rejuvenate Skin
As we age, our skin’s natural collagen production declines, leading to wrinkles, fine lines, and a loss of facial volume. While many treatments…
Collagen stimulators · Chiswick and Covent Garden
Restore structure and stimulate collagen with Radiesse, the dual-action filler for long-lasting rejuvenation.
5.0on Google · Read reviewsDr Harry JamesEvery treatment, personally

In short
Radiesse at Dr Harry Clinic, Chiswick and Covent Garden. Collagen stimulation, not filler volume, offered only in its hyperdilute form to improve skin quality rather than add bulk. Delivers gradual, natural results that last 12 to 18 months, with continued improvement as collagen production increases throughout this period. Guide price £400. Every treatment is carried out personally by Dr Harry James, MBChB PGDip (CAIT), GMC 7528423, at a CQC registered clinic.
At a glance
Collagen stimulation, not filler volume, offered only in its hyperdilute form to improve skin quality rather than add bulk.
Improves laxity, texture, and elasticity in face, neck, jawline, and hands.
Delivers gradual, natural results that last 12 to 18 months, with continued improvement as collagen production increases throughout this period.
A versatile treatment tackling one of the key causes of visible ageing.
£400 course of 3 £1,000
Dr Harry James
MBChB PGDip (CAIT), GMC 7528423
£75, book online
On this plate
Reviews
★★★★★
Dr Harry is absolutely amazing, I can’t recommend him enough. I had my usual skin maintenance treatments yesterday, and for the first time I decided to try a lip booster. Harry was so informative, knowledgeable, and reassuring throughout, and he made me feel completely at ease. I was originally offered standard lip filler, but as I’m in my 60s I wanted something more subtle and natural-looking, the lip booster felt like the perfect choice. I left the clinic with only a little swelling (nothing too bad at all) and my lips already look healthier, more youthful, and beautifully natural. I’m genuinely thrilled with the result and can’t thank him enough. Five-star-plus treatment every time. His prices are very reasonable, and his manner with patients is kind, professional, and wonderful. I’m already looking forward to my next appointment, even if I have to wait a few months because the results last so well. Thank you Dr. Harry ❤️
IIvana SwanCovent Garden · via Google
★★★★★
Dr. Harry is incredibly knowledgeable and really takes his time to talk you through everything, answer any questions, and ensure you’re comfortable throughout the whole appointment. I never felt rushed, and he explained the treatment and expected results clearly, which made me feel really confident in the process. I’m so pleased with my results and wouldn’t hesitate to recommend him.
NNatasha-LaraChiswick · via Google
★★★★★
Great experience for an ultrasound-guided filler dissolution treatment. Dr Harry was very patient, caring and professional. I really appreciated the thorough consultation and felt well looked after throughout the treatment. Very happy with the results!
KKasey SongCovent Garden · via Google
★★★★★
I visited Dr Harry after having my lips done by a few, other practitioners and my experience was positively incomparable. Harry was extremely thorough with his questioning, support and actual practice, I felt reassured and at ease, alike did my Mum, at the hands of Harry. I had 0.6ml of lip filler and was extremely impressed that he reevaluated my lips afterwards, adding in the remaining filler into specific areas. I did not have 1 single bruise, despite coming up black and blue in the past, and my lips are the most symmetrical they have ever looked. 1 million percent the best investment I have made to my face and I would never recommend going to anybody else! I visited the Chiswick clinic and it was beautiful🫶🏼 thank you Harry
EEmmaChiswick · via Google
★★★★★
I went to Dr Harry Clinic after both a recommendation and doing a lot of research, as this was my first anti-wrinkle injection treatment and choosing someone I truly trusted was really important to me. From the moment I arrived, Dr. Harry immediately made me feel at ease. He was so lovely, professional, and took the time to explain everything in detail. Most importantly, he really listened to what I wanted - especially my preference for a very natural look. Two weeks later, I had my complimentary follow-up appointment and I was already so happy with the results. At the follow-up, Harry was an absolute perfectionist, carefully assessing everything to ensure it was as balanced and natural as possible, with a small top-up where needed. Overall, my experience exceeded all expectations. If it’s your first time having treatment, or you’re looking for a new injector, I genuinely cannot recommend Dr Harry Clinic enough. One of the best decisions I’ve made.
YYasemin AksoyChiswick · via Google
★★★★★
Dr Harry is absolutely amazing, I can’t recommend him enough. I had my usual skin maintenance treatments yesterday, and for the first time I decided to try a lip booster. Harry was so informative, knowledgeable, and reassuring throughout, and he made me feel completely at ease. I was originally offered standard lip filler, but as I’m in my 60s I wanted something more subtle and natural-looking, the lip booster felt like the perfect choice. I left the clinic with only a little swelling (nothing too bad at all) and my lips already look healthier, more youthful, and beautifully natural. I’m genuinely thrilled with the result and can’t thank him enough. Five-star-plus treatment every time. His prices are very reasonable, and his manner with patients is kind, professional, and wonderful. I’m already looking forward to my next appointment, even if I have to wait a few months because the results last so well. Thank you Dr. Harry ❤️
IIvana SwanCovent Garden · via Google
★★★★★
I visited Dr Harry after having my lips done by a few, other practitioners and my experience was positively incomparable. Harry was extremely thorough with his questioning, support and actual practice, I felt reassured and at ease, alike did my Mum, at the hands of Harry. I had 0.6ml of lip filler and was extremely impressed that he reevaluated my lips afterwards, adding in the remaining filler into specific areas. I did not have 1 single bruise, despite coming up black and blue in the past, and my lips are the most symmetrical they have ever looked. 1 million percent the best investment I have made to my face and I would never recommend going to anybody else! I visited the Chiswick clinic and it was beautiful🫶🏼 thank you Harry
EEmmaChiswick · via Google
★★★★★
I went to Dr Harry Clinic after both a recommendation and doing a lot of research, as this was my first anti-wrinkle injection treatment and choosing someone I truly trusted was really important to me. From the moment I arrived, Dr. Harry immediately made me feel at ease. He was so lovely, professional, and took the time to explain everything in detail. Most importantly, he really listened to what I wanted - especially my preference for a very natural look. Two weeks later, I had my complimentary follow-up appointment and I was already so happy with the results. At the follow-up, Harry was an absolute perfectionist, carefully assessing everything to ensure it was as balanced and natural as possible, with a small top-up where needed. Overall, my experience exceeded all expectations. If it’s your first time having treatment, or you’re looking for a new injector, I genuinely cannot recommend Dr Harry Clinic enough. One of the best decisions I’ve made.
YYasemin AksoyChiswick · via Google
Radiesse is a next-generation dermal filler designed to do more than simply add volume. Its dual-action formula provides immediate structural support and stimulates your body’s natural collagen production, making it one of the most comprehensive rejuvenation treatments available today.
Unlike traditional fillers that fade with time, Radiesse leaves behind a more youthful facial framework by encouraging long-term biological change beneath the skin. This makes it ideal for patients seeking not just visible enhancement, but structural skin improvement that continues long after the initial treatment.
Dr Harry’s expertise with Radiesse stems from his deep anatomical knowledge and his role as a certified trainer in advanced injection techniques. His approach ensures both the precision and artistry required to deliver safe, balanced, and natural-looking outcomes.



Radiesse contains calcium hydroxylapatite (CaHA) microspheres, a mineral naturally found in bones and teeth, suspended in a smooth gel carrier. This biocompatible substance provides instant volumisation while stimulating collagen growth in the surrounding tissue.
As the gel is gradually absorbed over time, the CaHA microspheres remain in place to encourage collagen synthesis. The result is firmer, more elastic skin with structure that lasts far beyond the filler itself.
Dr Harry’s training in both aesthetic and medical applications of CaHA ensures optimal use of Radiesse in both restorative and preventative facial treatments. His treatments are always tailored to preserve natural proportions and support long-term skin integrity.
Mid-Face and Cheeks
Radiesse Hyperdilute is used to improve skin quality in the mid-face by stimulating collagen production. Rather than adding bulk, this technique helps soften fine lines, improve firmness, and restore a healthier skin texture over time.
Jawline and Chin
Strategic treatment along the jawline and chin supports skin tightening and improved definition. The collagen stimulation effect gradually enhances skin resilience, creating a more refined and youthful lower face profile.
Neck and Décolletage
The hyperdilute technique is particularly effective for crepey or lax skin on the neck and chest. By promoting fresh collagen and elastin, Radiesse restores smoother texture and firmer contours in these delicate areas.
Hand Rejuvenation
Hands often reveal age through thinning skin and visible tendons. Radiesse Hyperdilute improves skin thickness and elasticity, creating smoother, younger-looking hands without the artificial “filled” look.
Selected Body Areas
In some patients, Radiesse Hyperdilute can also be applied to areas such as the upper arms or abdomen to improve skin tone and firmness. Suitability is always assessed individually to ensure safe and effective outcomes.
Radiesse is unique in offering both immediate and progressive benefits.
Immediately after treatment: Patients notice a restored fullness and improved contour in the treated area.
Over the following weeks and months: Natural collagen production is triggered, improving elasticity, firmness, and skin texture from within.
Long-term: Once the filler is absorbed, the new collagen structure remains, delivering support and lift that can last over a year.
This two-phase mechanism sets Radiesse apart from hyaluronic acid-based fillers and makes it particularly effective for patients seeking natural-looking, long-duration rejuvenation.
Radiesse Hyperdilute requires a refined technique to ensure smooth placement, even distribution, and consistent collagen stimulation. Dr Harry performs this treatment using specialist dilution and injection methods designed for skin quality improvement rather than volumising filler effects.
Precision Delivery
The hyperdiluted solution is placed evenly across the treatment area, encouraging widespread collagen renewal. Dr Harry’s expertise ensures:
Uniform stimulation of fibroblasts for consistent skin tightening.
Natural tissue integration without lumps or irregularities.
Safe treatment adapted to each patient’s skin thickness and anatomy.
Collagen Stimulation, Not Volume
Unlike traditional filler techniques, Radiesse Hyperdilute is not used here to sculpt or lift. Instead, it acts as a bio-stimulator, triggering your skin to produce fresh collagen and elastin. Over time, this process helps restore firmness, elasticity, and a healthier texture that looks natural and lasts.
Every treatment begins with a full consultation to assess facial structure, tissue quality, and goals. Dr Harry creates a bespoke plan, sometimes incorporating Radiesse as part of a broader rejuvenation protocol.
The procedure typically takes 30 to 45 minutes and involves minimal discomfort. A numbing agent may be used for added comfort. Most patients resume normal activity immediately afterward.
Results are visible immediately, with continued improvement over 8 to 12 weeks as new collagen develops. Some mild swelling or bruising may occur and resolves within days.
Dr Harry will provide detailed aftercare guidance to optimise results and minimise downtime.
One of the most compelling advantages of Radiesse is its extended duration. Effects typically last 12 to 18 months or more, depending on the area treated and individual response.
Dr Harry offers personalised maintenance schedules, helping patients sustain their results through:
Strategic touch-up sessions
Integration with complementary treatments (e.g., skin boosters or botulinum toxin)
Long-term skincare support
With consistent care, many patients find that Radiesse enhances not just appearance but skin behaviour, improving its ability to stay firm, lifted, and resilient.
Radiesse is suitable for men and women who:
Want to restore lost facial volume
Desire structural rejuvenation without excessive fullness
Seek long-lasting results with minimal maintenance
Have skin laxity or thinning in the face, hands, or body
Are not suitable candidates for hyaluronic acid fillers or wish to avoid over-hydration effects
During your consultation, Dr Harry will evaluate your suitability and provide clear, medically informed advice.

Meet Dr Harry James
Dr Harry James brings a wealth of experience and clinical precision to our London clinics. As a certified trainer in aesthetic medicine and a finalist in multiple national aesthetic award ceremonies, Dr Harry is recognised for his advanced techniques, patient-focused results, and commitment to setting high standards in non-surgical aesthetics.
His expertise extends beyond delivering treatment, he actively trains other practitioners and remains at the forefront of the field through continuous education and professional development.
Common questions
Unlike standard fillers that add volume, Radiesse Hyperdilute is reconstituted into a fine liquid and works purely as a collagen stimulator. It improves skin quality, firmness, and elasticity over time, rather than creating an artificial “filled” look.
Some patients notice early improvements in skin texture within a few weeks, but the most significant changes develop gradually over 2 to 3 months as your body produces new collagen and elastin.
Results typically last 12 to 18 months, depending on the treatment area and individual response. Because Radiesse stimulates your own collagen, improvements often continue even after the product itself has broken down.
Yes, when performed by an experienced medical injector, Radiesse Hyperdilute is very safe for delicate skin. Dr Harry uses advanced techniques to ensure even placement, natural outcomes, and minimal risk in these thinner-skin regions.
Your visit
The same five steps for every patient, whatever you come in for.
Book online or call the clinic. A consultation is £75 and is redeemable against your treatment if you go ahead. Two to four weeks is the usual lead time.
A full medical history review, then a detailed assessment of your concerns and goals. Where the skin itself is the question, that includes an Observ 520x scan, which looks under the surface at sun damage, pigmentation and hydration. Unhurried, and with time to ask everything you want to ask. About the skin analysis
Dr Harry talks through the options and what each can and cannot do, then builds a personalised plan. Nothing is decided for you, and there is no obligation to treat on the day.
Carried out by Dr Harry James himself, never handed to whoever is free. You leave with written aftercare and a number to call if anything concerns you.
A follow up to assess how the treatment settled, monitor anything that needs watching and plan maintenance or next steps.
Where to have it
West London
Radiesse with Dr Harry James at our Chiswick clinic, W4. Six days a week, by appointment.
Dr Harry Clinic, Aesthetic Clinic in Chiswick300 Chiswick High Road, Chiswick, London W4 1NP
★★★★★ Rated 5.0 on Google
Radiesse is available at both clinics, at the same price and with the same practitioner: Dr Harry James carries out every treatment himself. Chiswick clinic · Covent Garden clinic.
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Ready when you are
A £75 consultation with Dr Harry James at Chiswick or Covent Garden, redeemable against your treatment if you go ahead. He assesses, explains what Radiesse can and cannot do for you, and writes a plan. Nothing is decided for you on the day.
Chiswick, W4 and Covent Garden, WC2020 3633 8687