Aqualyx (misspelled ‘Aqualix’) is a fat-dissolving injection suitable for targeted treatment of smaller fat deposits that are resistant to diet or exercise, and not suitable for general weight loss. It effectively destroys fat cells by breaking down cell walls, allowing contents to be cleared gradually by the body. FDA guidance does class ‘Aqualyx’ among the US ‘fat dissolving injections’ not FDA-approved and the sales literature says “CE-marked treatment sold in Europe and related territories”.
Table of Contents
What is Aqualyx?
It’s an injectable body-contouring product used to target pockets of fat that diet and exercise have had little effect upon. Described as ‘a revolutionary new injectable for the treatment of fat accumulation’, it’s non-surgical and targets “localized pockets of unwanted fat. Common treatment sites were listed as: chin/double chin, jawline, upper and lower arms, waist and love handles, abdomen and flanks, bra area and lower back, inner and outer thighs, outer thighs/saddlebags, inner and outer knees, buttocks and armpits. However it cannot be used for weight loss and according to the makers, it’s not intended for obese or considerably overweight individuals.
Simple way to see it: Aqualyx is for contouring not slendering, which is important to know as people may expect radical before-and-after pictures after a session. This method is better suited to sculpting than body transforming.
How Aqualyx works
This active principle utilizes sodium deoxycholate which is a detergent-like material and it breaks down the membranes of fat cells. This dissolved fat then needs to be metabolized and removed by the body over a period of time via natural means. According to the literature concerning the product the active ingredient has been chosen to work with the fatty tissue without damaging the surrounding cells if properly applied.
Aqualyx vs. other options
| Treatment | Best for | Downtime | Main upside | Main downside | Evidence note |
| Aqualyx | Small, localized fat pockets | Usually low to moderate swelling for a few days | Non-surgical contouring | Not a diet drug; risk increases with poor technique | FDA: listed as an unapproved fat dissolving injections available in the US; brochure CE marked- product promises to target fat reduction. |
| Kybella | Under-chin fat in adults | Swelling is common | FDA-approved fat-dissolving injection exclusively for the chin | Indicated solely for submental fat. Not intended for any other areas of the body. | According to the FDA, Kybella is the only injectable fat-dissolving medication approved for injection under the chin in adults.. |
| Liposuction | Larger fat removal or more dramatic reshaping | Recovery is longer; bruising and swelling are common | Can remove more fat in one procedure | Surgery carries procedural and recovery risks | It mentions possible results, including bruising, swelling, numbness, scars, fluid collections, and uneven contour, based on both NHS and Mayo Clinic data. |
What results can you realistically expect?
Says product brochure, visible result could appear after first 2 treatments while clinic guidelines suggest that typically 2 to 4 treatments should be required to see a visible reduction, depending on the treatment region and the amount of fat being reduced.
One clinical example can illustrate: a retrospective study over 4 years involving 186 patients treated with a CE-marked adipocitolytic injectable concluded that all patients reported swelling and redness that resolved within 3 to 5 days; other reported sequelae including small nodules, itching, transient paresthesia were seen in less than half the patient series and no necrosis or serious adverse events occurred. That is not to say all treatments bring stunning results, rather they are most efficient when treating a small localized region for minor improvement
Typical cost of Aqualyx injections
Public UK clinic price pages show wide variation. A reasonable real-world range from current listings is roughly:
| Treatment area | Typical UK clinic price examples | Notes |
| Small areas such as chin/jowls | £150–£400 per session | Several clinics list entry prices in this band. |
| Medium areas such as arms or back | £250–£400 per session | Pricing usually rises with area size. |
| Larger body areas such as stomach or thighs | £300–£615 per session | Larger treatment zones often need more product and sessions. |
All these prices are from publicly advertised prices in clinics; they are not standard prices for anywhere in the world. The price is all dependent on which clinic, in which city and with whom the injections are being performed. It also depends on how many treatments are being done. Most will include a consultation price separate, for example 25 or 50.
Side effects and risks
The more frequent reactions are expected to be mild and transient and localized to the site of injection. Swelling and erythema was observed in all patients in the 4-year clinical series and bruising, itching and transient paresthesia was noted in several patients. Product material notes swelling, erythema and minor bruising to be expected.
Here is a clearer breakdown:
| Side effect | How common? | Usual course | Why it matters |
| Swelling | Common | Often settles in a few days | This is one of the most expected reactions. |
| Redness / tenderness | Common | Usually short-term | A normal inflammatory response after injection. |
| Bruising | Common | Usually fades on its own | Can make the area look worse before it looks better. |
| Itching | Fairly common | Can start several days later | Reported in the 4-year series. |
| Small lumps / nodules | Less common | May take weeks to months | Usually temporary, but should be reviewed if persistent. |
| Numbness / altered sensation | Less common | Temporary in many cases | Needs monitoring if it lasts or worsens. |
The serious risks to take seriously
These are rare but are serious. The FDA cautions about the use of unauthorized fat-dissolving injections which have led to permanent scarring, grave infections, disfigurements, cyst formation and deep, tender lumps- particularly in settings where the material has not been introduced at the right site or in the right place, or injected by an unskilled or unauthorized person.
Case reports in the medical literature document grave consequences too including chronic infection, nodules, and skin necrosis after adipolytic injections; and these are the very reasons technique, dosage, and training of the injector are all important.
Who is a better candidate?
Most ideal candidates would have very small, isolated areas of fat that are resistant to diet and exercise and are at their desired weight already but looking for a slight reduction in shape not drastic weight loss. The brochure is clear about this as it states “Local fat. Not recommended for the severely obese or overweight patients. It does not reduce size… The following should not be treated… Active infection or acute pathology within treatment area… Severe autoimmune disease… Organs with impaired function… Immunosuppressed… Pregnant or breastfeeding.”
This is why a thorough consultation is important, a clinic worth going to should look at the quality of the skin, take a full medical history, and also examine any current medications and ask about the outcome the individual is looking for.
Before-and-after: what usually changes?
You might see a gentle curve to the chin, jawline, or stomach in the before photo, and a better contour, but not entirely a new shape, in the after photo. It’s the most realistic changes in the before and after, like the sharpening of a jawline, removal of the fullness of a chin, smoothing out of a side profile, and definition of a waist.
A realistic timeline looks like this:
| Time after treatment | What many people notice |
| 1–3 days | Swelling, tenderness, redness, bruising |
| 1–2 weeks | The area begins to settle |
| 4–8 weeks | More visible contour changes may appear |
| After several sessions | The clearest result is usually seen |
FAQs
How many Aqualyx sessions are usually needed?
Many clinics plan 2–4 sessions, depending on the area and the amount of fat. The brochure also says visible results may appear within the first two treatments.
Does Aqualyx hurt?
Although most of the patients reported stinging, pressure or soreness instead of pain the level of pain varied from the area and the technique used by the injector. A clinical trial evaluating an injection method similar to this reported pain/pressure during injection in a high percentage of the patients.
Are the results permanent?
The fat cells treated are destroyed and flushed away, the results are potentially permanent, although they can be reversed by increased weight.
Do I have any downtime?
There is typically no formal downtime, but it is common to be swollen and red for a few days. Many people find it useful to block out a few days in order to recover.
Can it replace liposuction?
No. A key study describes injectable fat-reducing therapy as not an alternative to liposuction, but rather a good option for small collections of fat or touch-ups.
Final takeaway
So for patients seeking non-surgical contouring of localized areas, particularly under the chin and the jaw line or localized fat in small areas, this can be a useful option. Careful selection of patients and setting of realistic expectations are crucial, and a good experienced clinician is essential. The biggest mistake here is to treat this as a weight-loss shortcut. It is not. This is a body-contouring treatment-and used correctly, is an excellent one.
