Fat Dissolving Injections: How Many Sessions Do You Need and When Will You See Results?
The number of fat dissolving injection sessions depends on the product used, treatment area and amount of localised fat. For licensed deoxycholic acid treatment under the chin, two to four sessions are often sufficient, with sessions spaced at least four weeks apart, although some people may need fewer or more.
A stubborn pocket of fat under the chin that will not shift, however consistent the diet and exercise routine, is one of the most common reasons people start looking into fat dissolving injections at Wellbeing Aesthetic’s Croydon clinic, usually alongside anti-wrinkle injections and dermal fillers.
The most common question at consultation is not whether the treatment works, but how many sessions it actually takes and how long it will be before a difference is visible. Both answers depend on the area being treated, the amount of fat present, and how an individual’s body responds, which is why a course is planned rather than promised as a single visit fix.
This guide sets out how fat dissolving injections work, what a realistic session plan looks like, when results typically begin to show, what side effects to expect, and who should avoid the treatment altogether.
None of this replaces a proper consultation. Fat dissolving injections are not a weight loss treatment, and whether they are the right option for you depends on an assessment of the specific area of concern, not a generic session count.
Key Takeaways
- Most courses need two to four sessions. The exact number depends on the area treated, the amount of fat present, and how the body responds between appointments.
- Sessions are spaced a few weeks apart. This interval gives the body time to clear broken-down fat cells through the lymphatic system before the next treatment.
- Results build gradually, not overnight. A visible change is usually noticed after the second session rather than immediately following the first.
- The chin and jawline are the most requested area. Submental fat, commonly called a double chin, is the area most people treat first, though other small pockets of fat can also respond.
- It is not a weight loss treatment. Fat dissolving injections target specific, localised pockets of fat and are not designed or recommended for general weight management.
- Results are considered permanent for treated cells. Once a fat cell is broken down and cleared, it does not return, though this assumes a broadly stable weight afterwards.
- Swelling and tenderness are expected, not a warning sign. Temporary swelling, redness and bruising around the injection site are a normal part of how the treatment works.
- Not everyone is a suitable candidate. Pregnancy, certain medical conditions, and active skin infections in the treatment area generally rule out treatment.
What Are Fat Dissolving Injections?
Fat dissolving injections’ is a broad term and different injectable products may contain different ingredients. One clinically established option for reducing submental fat is deoxycholic acid, which works by disrupting fat-cell membranes Once a fat cell has been broken open, the body clears its contents away through the lymphatic system over the following weeks.
This is different to how dermal fillers or Profhilo work, since those treatments add volume or stimulate collagen rather than remove fat cells. You can see the kind of change this treatment produces in the Wellbeing Aesthetic gallery, alongside the clinic’s other non-surgical treatments.
Which Areas Can Be Treated?
The submental area, under the chin, is by far the most requested treatment site, since it redefines the jawline and profile without surgery or downtime. It is also the area with the most established research behind it.
- Under the chin and along the jawline, the most common and most studied area
- Small, stubborn pockets of fat elsewhere on the body, where appropriate, following an in-person assessment
Fat dissolving injections work best on small, well-defined pockets of fat rather than larger areas, and are not a substitute for a healthy diet and regular exercise.
How Many Sessions of Fat Dissolving Injections Do You Need?
Most courses involve two to four sessions, spaced a few weeks apart, though the exact number depends on the area being treated, how much fat is present, and how the individual responds to earlier sessions.
Spacing sessions a few weeks apart is not arbitrary. It gives the body time to clear the broken-down fat cells from the previous treatment before more is targeted, and it lets the practitioner assess progress before deciding whether, and how much, further treatment is needed.
| Stage | What Typically Happens | Rough Timing |
|---|---|---|
| Session 1 | Initial treatment of the target area, with swelling expected for several days afterward | Week 0 |
| Between sessions | The body clears broken-down fat cells gradually via the lymphatic system | Weeks 1 to 3 |
| Session 2 | Most patients begin to notice a visible change around this point | Weeks 3 to 6 |
| Further sessions | Additional sessions as assessed, up to a typical course total of 2 to 4 | Weeks 6 to 12 |
| Final assessment | Practitioner reviews the finished result once swelling has fully settled | Several weeks after the last session |
EXPLORE YOUR OPTIONS
If a stubborn pocket of fat under the chin or jawline has been bothering you, it’s worth exploring the full range of treatments available at Wellbeing Aesthetic before deciding what to book.
Explore Treatments →When Will You See Results?
Results build gradually rather than appearing immediately. The treated fat cells are broken down over the days and weeks following each session, which means early changes are often subtle and become clearer as the course progresses.
Most people start to notice a visible difference after their second session, once the body has had time to clear away fat broken down in the first. A full, settled result is usually assessed several weeks after the final session in the course, once any lingering swelling has gone down completely.
What Happens During a Fat Dissolving Session?
- Consultation and assessment. Your practitioner reviews the treatment area, your medical history and your goals, and confirms you are a suitable candidate.
- Marking and preparation. The area is cleaned and marked to guide precise, even placement of the injections.
- Numbing, if needed. A topical numbing cream or cold pack can be used beforehand, since mild to moderate discomfort is expected.
- Injections. A series of small injections are placed across the marked area using a fine needle.
- Aftercare guidance. You are talked through what to expect over the following days and how to support the area while it settles.
Most sessions take around fifteen to thirty minutes, and there is no need to set aside dedicated recovery time, although some swelling is expected for the days that follow.
MEET YOUR PRACTITIONER
Every fat dissolving treatment plan begins with a consultation with Dr Huma Saeed or Shasha. You can read more about the team’s NHS-trained, consultation-first approach on the Wellbeing Aesthetic about page.
Meet The Team →What Are the Side Effects of Fat Dissolving Injections?
- Swelling around the injection site, which is often the most noticeable effect and can look more pronounced than expected in the first few days
- Redness, warmth and tenderness in the treated area
- Bruising, which can take around a week to fade
- Mild to moderate discomfort during and shortly after the injections
- Occasional firmness or small lumps as the area settles, which typically resolve over time
More significant reactions, such as infection, nerve irritation, or an uneven result, are uncommon when treatment is carried out by a suitably qualified practitioner, but should be reported to your practitioner promptly if they occur.
How Much Do Fat Dissolving Injections Cost in the UK?
Pricing varies by clinic, the area being treated, the amount of product used, and the number of sessions in a course, so there is no single correct figure across London or the wider UK market.
| Course Structure | General UK Market Range | Notes |
|---|---|---|
| Single session | ÂŁ200 to ÂŁ350 | Price depends on the area treated and the amount of product used |
| Course of 2 to 4 sessions | ÂŁ500 to ÂŁ1,300 | The course typically recommended for a first treatment plan |
| Top-up session | Similar to a single session price | Only considered if assessed as needed at review |
These figures are a general market guide, not a Wellbeing Aesthetic price list. The clinic does not publish fixed prices, since every treatment plan depends on the area and number of sessions a particular patient needs, so an accurate, itemised quote is only possible after an assessment.
BOOK YOUR CONSULTATION
Every fat dissolving treatment plan starts with a free, no obligation consultation. Book your consultation here to have the treatment area properly assessed before any course is agreed.
Book Consultation →Are the Results Permanent?
Once a fat cell has been broken down and cleared by the body, it does not return. In that sense, results from a completed course are generally considered permanent for the cells that were treated.
That said, permanent does not mean immune to future weight change. If overall body weight increases significantly afterwards, remaining fat cells elsewhere, including nearby untreated cells, can still expand, which is why maintaining a broadly stable weight matters for keeping the result you worked for.
Who Should Avoid Fat Dissolving Injections?
Fat dissolving injections are not automatically suitable for everyone. The treatment is generally avoided during pregnancy or breastfeeding, for anyone with an active skin infection or skin disease in the treatment area, and for those who are immunocompromised.
It is also not recommended as a weight loss treatment or for anyone looking to address general obesity rather than a specific, localised pocket of fat. NHS guidance on cosmetic procedures sets out general safety questions worth asking before booking any injectable treatment, regardless of which one you are considering.
SEE WHAT OTHERS SAY
Curious what a fat dissolving course really feels like? You can read patient experiences of aesthetic treatments at the clinic before deciding whether to book.
Read Testimonials →How Do You Choose the Right Clinic for Fat Dissolving Injections?
- Check who is administering the treatment, and whether it is carried out or directly supervised by a medically trained practitioner
- Confirm your medical history is reviewed at consultation, including any conditions that would rule treatment out
- Look for transparency on the product used and pricing, including a clear, itemised quote for the full course
- Ask how many sessions are realistically likely for your specific area, rather than accepting a generic number upfront
How Wellbeing Aesthetic Approaches Fat Dissolving Treatment
At Wellbeing Aesthetic, every fat dissolving treatment plan begins with a free consultation with Dr Huma Saeed or senior aesthetic practitioner Shasha, where the treatment area, medical history and goals are reviewed before anything is recommended. A typical course is two to four sessions, assessed and confirmed as treatment progresses rather than fixed in advance.
The clinic’s medically led positioning, with Dr Saeed’s NHS background and Shasha’s fifteen-plus years as an aesthetic practitioner and accredited trainer, means the consultation focuses on whether fat dissolving injections are clinically appropriate for your specific concern. If a different treatment, or a combination approach, would serve you better, that is explained honestly, and some patients also combine a course with IV vitamin drip therapy for broader wellness support where there is a genuine reason to do so.
A Simple Checklist Before Booking Fat Dissolving Injections
- Confirm the specific area you want treated, and whether it is a good candidate for fat dissolving rather than another approach.
- Disclose your full medical history at consultation, including pregnancy, breastfeeding, and any relevant health conditions.
- Ask directly who will be performing your injections and what their qualifications are.
- Request a clear, itemised quote for the likely course, rather than a single session price alone.
- Plan for a course of two to four sessions rather than budgeting for a single appointment only.
- Ask what aftercare support is included and confirm who to contact if you have questions after your appointment.
Conclusion
Fat dissolving injections are a course-based treatment, not a one-visit fix, and understanding that from the outset makes the whole process easier to plan around. Most people need two to four sessions, spaced a few weeks apart, with a visible change usually appearing after the second treatment and a final result assessed once everything has settled. Knowing the realistic timeline, the expected side effects, and who should avoid treatment altogether puts you in a stronger position walking into a consultation.
READY TO FIND OUT MORE?
If a stubborn pocket of fat under the chin has been bothering you, get in touch with Wellbeing Aesthetic on +44 7918 856255 to book a free consultation and find out how many sessions your treatment plan would realistically involve.
Book Consultation →Frequently Asked Questions
Most courses involve two to four sessions, spaced a few weeks apart. The exact number depends on the area being treated, how much fat is present, and how your body responds between sessions.Â
Most people start to notice a visible change after their second session, as the body gradually clears away fat broken down from the previous treatment. A final, settled result is usually assessed several weeks after the last session.Â
Once a treated fat cell is broken down and cleared, it does not return, so results are generally considered permanent for those cells. A significant weight increase afterwards can still affect how the area looks overall, so maintaining a broadly stable weight helps protect the result.Â
Most patients describe mild to moderate discomfort during the injections, and a numbing cream or cold pack can be used beforehand. Swelling, tenderness and bruising afterwards are expected and usually settle within a week or so.Â
The submental area, under the chin, is by far the most requested site, since it helps redefine the jawline and profile without surgery or downtime. Other small, well-defined pockets of fat can sometimes be treated following an in-person assessment.Â
No. Fat dissolving injections target specific, localised pockets of fat that have not responded to diet and exercise, and are not designed, recommended, or suitable for general weight loss or obesity.
A single session generally ranges from around ÂŁ200 to ÂŁ350, with a full course of two to four sessions often costing ÂŁ500 to ÂŁ1,300 in total. Exact pricing depends on the clinic, the area treated and the number of sessions, so a personalised quote from a consultation is the only reliable figure.
Fat dissolving injections are generally avoided during pregnancy or breastfeeding, by anyone who is immunocompromised, and for anyone with an active skin infection or skin disease in the treatment area. A full medical history review at consultation confirms individual suitability.Â
Related Wellbeing Aesthetic Blogs
Dr. Huma
Dr. Huma Saeed is a medically trained professional with a passion for aesthetic medicine and patient care. After relocating to London, she continued working within the NHS while developing her clinical expertise. She later specialised in aesthetic treatments and established her own clinic, focusing on IV drips and PRP treatments, delivered with professionalism, safety, and personalised care.
Book your consultation today!
Fill out the form below and we’ll be in touch shortly.
