Fat Dissolving Injections
An honest, insider guide to fat dissolving injections in the UK. What it really is, what it costs, what it involves, and how to choose a provider worth trusting.
Medical aesthetic treatment. This page is general information, not medical advice. Treatments carry real risks, results vary and are never guaranteed, and prices are indicative. Please consult a qualified medical practitioner and confirm details with the provider before booking.
Fat dissolving injections use a deoxycholic acid based solution to break down small, stubborn pockets of fat such as a double chin. They are given as a course of two to three sessions and cause swelling for several days. In the UK in 2026 expect roughly £250 to £350 per session, and the product used matters for your safety.
What fat dissolving injections actually is
Fat dissolving injections deliver a solution, most commonly based on deoxycholic acid, into a small pocket of fat. The solution breaks down the fat cell walls so the contents can be processed and cleared by the body over the following weeks. The best known regulated product in the UK is Aqualyx.
They suit people with small, defined areas of stubborn fat that resist diet and exercise, such as under the chin, the jowls or small areas on the body. They are a contouring treatment for modest pockets, not a method of weight loss, and they will not tighten significant loose skin.
Realistic expectations matter. Results are gradual and usually need a course, and the treatment is best thought of as refinement of shape rather than transformation.
What to expect, step by step
A consultation checks whether you are a suitable candidate, since the treatment is designed for small, defined pockets of fat rather than weight loss. The practitioner assesses the area, discusses how many sessions you are likely to need, and confirms which product they use and whether it is regulated for use in the UK.
Treatment involves a series of small injections directly into the fat pocket, sometimes after numbing. It is normal to feel some stinging and a warm or aching sensation during and after. Swelling begins soon afterwards and is an expected part of how the treatment works.
Is it right for you?
Fat dissolving injections suit people close to their target shape who have a small, stubborn pocket of fat that resists diet and exercise, such as under the chin. They appeal to those who want a non surgical option and are willing to accept swelling and a course of sessions.
They are not a weight loss treatment and are unsuitable for large areas or for tightening loose skin. They are not appropriate during pregnancy or breastfeeding, near certain medical conditions, or where the skin in the area is poor quality, so a careful assessment of suitability comes first.
The honest cost
Fat dissolving injections are usually priced per session. As an indicative 2026 guide, a session is around £250 to £350, and because two to three sessions are typically needed, a full course can reach roughly £500 to £900 depending on the area and the number of sessions.
Price reflects the product, the size of the area, the practitioner's experience and the clinic's location. A larger area or a stubborn pocket may need more sessions, which increases the total.
With this treatment, the cheapest option carries real safety questions. Ask exactly which product will be used and whether it is regulated for use in the UK before you consider price.
London and major city clinics tend to charge more per session, with regional clinics often more affordable. The bigger factors in total cost are the size of the area and the number of sessions needed, so a realistic plan and a regulated product matter more than the headline price.
Risks, downtime and results
Swelling, bruising, redness and tenderness in the treated area are common and expected, often lasting up to about a week, since the swelling is part of how the treatment works. Firmness or small lumps can be felt as the area settles.
Less commonly there can be prolonged swelling, uneven results, or injury to surrounding structures if injected poorly, which is why a trained injector and a regulated product are essential. The choice of product is a genuine safety issue. Aqualyx is CE marked and the only fat dissolving injectable widely used under MHRA standards in the UK, whereas some popular alternatives such as Lemon Bottle are not CE marked or approved by the MHRA and have limited published safety evidence. It is reasonable to ask for a regulated product.
Results are gradual, build over several weeks and are not guaranteed. A course is usually needed, and the treatment is for small fat pockets, not weight loss or skin tightening. It is not suitable for under 18s for cosmetic reasons in England.
Aftercare and getting the best result
Expect noticeable swelling, tenderness and possibly bruising in the treated area for up to about a week. Some clinics advise wearing supportive garments, massaging the area or avoiding strenuous exercise for a short period, so follow the specific guidance you are given.
Drink plenty of water to help your body process and clear the broken down fat, and be patient, as results build gradually over several weeks and usually need the full course. If swelling is severe, prolonged or accompanied by signs of infection, contact your clinic.
How to choose a safe provider
Choose a medically qualified or appropriately trained injector who uses a regulated product such as Aqualyx and works in a clean clinical setting. Ask which product they use, whether it is CE marked, and how many sessions you are likely to need.
A good consultation checks whether you are a suitable candidate, sets realistic expectations and is honest if the area is too large or if surgery or another treatment would serve you better. Be cautious of unregulated products, promises of dramatic single session results, and very low prices that skip the safety conversation.
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Frequently asked questions
How do fat dissolving injections work?
A solution, usually based on deoxycholic acid, is injected into a small fat pocket to break down the fat cells, which the body then clears over the following weeks.
How many sessions will I need?
Usually two to three sessions spaced a few weeks apart, depending on the area and your response. Results build gradually across the course.
Is Aqualyx safer than Lemon Bottle?
Aqualyx is CE marked and widely used under MHRA standards in the UK. Lemon Bottle is not CE marked or MHRA approved and has limited published safety evidence, so many clinicians prefer a regulated product.
How much swelling is normal?
Swelling, bruising and tenderness for up to about a week are expected and are part of how the treatment works. The area gradually settles as the fat is cleared.
Are they a weight loss treatment?
No. Fat dissolving injections target small, stubborn pockets of fat for contouring. They are not a method of weight loss and will not tighten significant loose skin.
How much do fat dissolving injections cost?
Indicatively £250 to £350 per session in the UK in 2026, with a course often totalling £500 to £900. Confirm the product and the current price with the provider.
Keep exploring
Fat dissolving injections are one part of non surgical contouring. Explore the related pages below.