Buttock Injections2021-04-19T15:39:41+00:00


Hyaluronic and Collagen Stimulator

Enlarge and reshape the buttocks.

Add shape to the hips.

Buttock fillers are an easier way to achieve the buttock shape you want, without surgery.

Enlarge and reshape the buttocks and add shape to the hips.

Buttock fillers are an easier way to achieve the buttock shape you want, without surgery.

Hyaluronic acid Buttock Filler

Logo Buttock Filler Brand

200 ml £4,400

300 ml £6,000

400 ml £7,800

The lowest-priced Hyaluronic acid buttock injections in the UK (when injected by a qualified buttock surgeon).

Collagen Stimulator Buttock Injections

Logo Buttock Filler Brand

Poly-L-lactic acid Collagen Stimulator

£280 per vial

After 20 vials – £265 per additional vial

The lowest-priced Collagen Stimulator buttock injections in the UK (when injected by a qualified buttock surgeon).

Harley Clinic Models

Bum Injections - Larger Patient

Hyaluronic acid and Collagen Biostimulator Buttock Filler Injections.

Hyaluronic acid Buttock Filler

Logo Buttock Filler Brand

200 ml £4,400

300 ml £6,000

400 ml £7,800

The lowest-priced Hyaluronic acid buttock injections in the UK (when injected by a qualified buttock surgeon).

Collagen Stimulator Buttock Injections

Logo Buttock Filler Brand

Poly-L-lactic acid Collagen Stimulator

£280 per vial

After 20 vials – £265 per additional vial

The lowest-priced Collagen Stimulator buttock injections in the UK (when injected by a qualified buttock surgeon).

Bum Injections

“Affordable buttock injections.

Extra filler means I can see a big improvement.”

Amrita – Chelsea




Buttock Injections - Small Patient

Small, Slim Patient : 100 ml (left side) + 100 ml (right side)

200 ml of premium HA filler cost = £4,400

or 20 vials of Collagen Stimulator = £5,600

Medium Frame Patient

300 – 400 ml of HA filler / 30 vials of Collagen Stimulator.

An average framed patient, seeking an increase in volume, may require upwards of 300 ml of filler or 30 vials of collagen stimulator.

A patient with an average size body may require a greater amount of filler than a small patient.

As a rough guide, 150 ml of HA filler, per buttock (from 300 ml in total), is generally sufficient to provide an increase in volume.

* Individual results may vary from person to person.

Butt Injections - Medium Patient

Average Size Patient : 150 ml (left side)  + 150 ml (right side)

300 ml of premium HA filler cost = £6,000

30 vials of Collagen Stimulator = £8,250

Larger Patient or Significant Volume Increase

600 ml of HA filler or 30 vials of Collagen Stimulator

A larger patient, or a smaller patient wanting a substantial increase in volume, may require 600 ml of filler, or more.

Larger Patient : 300 ml (left side)  + 300 ml (right side)

600 ml of premium HA filler cost = £11,100

60 vials of Collagen Stimulator = £16,200

If a patient is seeking a large increase in the size of their buttocks, then they may be better off to consider a Brazilian Butt Lift, or, for an even larger result; Buttock Implants.

A “Kardashian” sized bottom generally requires either a very large amount of filler (1,000 ml +) or Buttock Implants.

To compare filler to buttock implants, buttock implants are generally 250 – 560 ml in volume, for each implant.

* Individual results may vary from person to person.

Buttock injections are a less invasive method of augmenting and reshaping the buttocks using dermal fillers.



(Small 10 ml procedure with local anaesthetic)

Buttock injections can be performed on an outpatient basis requiring only local anaesthetic.

No hospital stay is required, with minimal downtime from work and normal activities.



Benefits and Downsides


The benefits of buttock injections using Hyaluronic acid dermal fillers include:

  • Less downtime – you can resume normal activities more quickly when compared with buttock surgery.
  • Buttock injections are a less invasive treatment option.
  • Less pain – buttock injections aren’t as painful during the recovery period as buttock implants or other surgical methods.
  • However, some patients do experience moderate to high levels of discomfort when having the filler injected and can opt to have the procedure performed under sedation (while asleep in our hospital), at an additional cost.
  • Lower risk – buttock injections do not require surgery and you do not have to be put to sleep (sedation or general anaesthesia).
  • The results from buttock injections are predictable, and more easily revised should this be required, by injecting additional filler to a specific area, or at additional cost to the patient.
  • In the worst-case scenario, if a patient does not like the result, the filler can also be dissolved by injecting a dissolving solution; however, there is no refund of the procedure price.
  • Low risk of scarring and minimal side effects.
  • It is possible that you may not need to take time off work, however having a few days away from work is advisable. Recovery time varies from patient to patient.
  • Natural-looking results.
  • No need to wait – the results are immediate and will continue to improve during the week following treatment.

* Individual results may vary from person to person.


The downsides include:

  • Bum injections are an expensive method of increasing the size of the buttocks when a premium Hyaluronic acid filler is used.
  • Less expensive methods of increasing buttock size include BBL Brazilian Butt Lift / Fat Transfer and Buttock Implants.
  • Pain can still be felt when the filler is injected under local anaesthetic. If a patient has a low pain threshold, they can opt to have the procedure under sedation (while asleep in our private hospital) at additional cost.
  • The area may be tender for up to 1 week, or more in exceptional cases.
  • Unrealistic expectations. For example, a patient wishing to dramatically increase their buttock size, with only a small amount of filler.
  • There is a risk of infection.  A full list of the risks associated with the treatment will be explained by the buttock surgeon.

* Individual results may vary from person to person.

With a sufficient quantity of buttock filler, your bottom will appear plumper, like when you have put on some weight.

You will be able to measure the change in size at home with a tape measure, depending on the volume of filler injected.

With multiple procedures or higher volumes, you can add significant volume to the buttocks.

* Individual results may vary from person to person.


The cost of buttock injections depends on how much filler is required and what brand of filler is used (the quality).

Call 020 3633 2019 to ask whether we can better any quoted UK price.

When considering the price, it is essential to know which brand of filler you are getting.

Economy fillers made in China are widely used in the UK and can produce lumpy and uneven results, migrate, and reabsorb in a short time.

Harley Buttock Clinic prefers HYAcorp MLF2 filler made in Germany.

A lower quality product can give disappointing results that last only a short time, we strongly recommend you get the best filler available.

Ask your doctor to see the box of filler you are receiving, it should look like this.

Harley Buttock uses experienced Plastic Surgeon Dr Gary Horn who is on the GMC Specialist Register (rather than a general doctor).

Bum Injection Finance



Buttock injections are not the same procedure as a Brazilian Butt Lift




Why is it important to know which brand of filler is being injected?


Lower quality or unbranded Hyaluronic acid fillers and Hydrogel are injected by several doctors in the UK.

The risks of using these fillers include:

  •  High risk of infection,
  •  More likely to be lumpy, or to migrate away from the area in which they were injected (down the thighs),
  •  Formation of hard lumps and nodules, potentially requiring surgical removal,
  •  Inflammatory response,
  •  Short duration (the filler may disappear within a few months).

It is usually not a good idea to inject a cheaper filler for these reasons.

Presently we see a number of cases from across the UK in which lower quality filler has been injected and needs to be dissolved away.

Patients then re-fill with HYAcorp, paying for a second time to have the procedure performed again with a quality filler.

Anything going into your body should be of the highest quality and purity.

Pure Buttock Filler
Buttock Filler HA Image

HYAcorp MLF2

Hyacorp MLF2 Buttock Injection Filler

HYAcorp MLFis the highest quality Hyaluronic acid filler available for buttock augmentation.


  • HYAcorp is designed for buttock augmentation and reshaping
  • Made in Germany
  • Long Lasting
  • Unlikely to migrate (slide down to the thighs)
  • Unlikely to be lumpy
  • Replacement for Macrolane VRF20 (discontinued).

Economy Filler

Economy Buttock Injection Filler

Economy fillers are the most commonly used fillers for buttock augmentation in the UK.

  • Made in Korea / China
  • Don’t last as long (usually 3 – 6 months)
  • The filler can migrate over time, usually to the upper thighs
  • More likely to give a lumpy result, particularly if injected superficially
  • Important to check whether they carry a CE Mark
  • More painful to inject when awake – being put to sleep is recommended

When considering that Economy fillers don’t last as long, and the results can be unsatisfactory, they are usually not a good choice for patients.

You will get better value by choosing a higher quality filler.


Lasts for
Made In
Pain Level
Sedation Charge
Risk of Lumpiness
Risk of Migration
Can be Dissolved
Main Ingredient
Results Seen
Risk Level

Premium Filler

9 - 18 months*
Lasts for : 9 - 18 months*
Made In : Germany
Pain Level : Low - Moderate
Sedation Charge : £1,700
Risk of Lumpiness : Very Low
Risk of Migration : Very Low
Can be Dissolved : Yes
Main Ingredient : Hyaluronic acid
Results Seen : Immediate Results
Risk Level: Low

Economy Filler

3 - 6 months*
Lasts for : 3 - 6 months*
Made In : China / Korea
Pain Level : High - Recommend Sedation
Sedation Charge : £1,700
Risk of Lumpiness : Moderate
Risk of Migration : Can migrate over time.
Can be Dissolved : Yes
Main Ingredient : Hyaluronic acid
Results Seen : Immediate Results
Risk Level: Low



Hyaluronic acid or Collagen Stimulator?2020-08-15T12:45:50+00:00

Logo Filler Brand

Collagen Stimulators based on poly-L-lactic acid are designed to stimulate the production of new tissue in the body. When a foreign substance is injected into the buttocks the body seeks to repair the damage and encapsulate the substance which creates the additional volume in the form of type III collagen.

Adjustable / Safety

A downside of using poly-L-lactic acid is the inability to dissolve or alter the result if something goes wrong, or needs to be adjusted.

Poly-L-lactic acid is a form of plastic and once it is injected into the body it can not be altered.

The patient must wait for the substance to break down on its own.

With Hyaluronic acid filler, the result can be altered following the procedure, if necessary, with the injection of Hyaluronidase enzyme.

Volume / Cost

To achieve the same results as with Hyaluronic acid, a patient would need to spend considerably more money if using injectable poly-L-lactic acid collagen stimulator. On the plus side, the filler will last a little longer than Hyaluronic acid (typically 2 years, versus Hyaluronic acid 9-18 months).

Method of Injection

It is important to inject either of the fillers using a cannula, rather than the needle supplied with the filler (which in the case of the collagen stimulator is only designed for injection in the face).  A cannula will allow the filler to be injected deeper into the correct layer of tissue, which improves the result and lowers the risk of any lumps forming.

When can I return to normal activities?2018-06-29T20:16:33+00:00

Mild discomfort including swelling and bruising can occur for up to 2 weeks.  Some activities are restricted for 2-3 weeks following buttock filler injections.

A support garment (lycra cycle shorts or similar) is optional for the first week, day and night, and can be purchased by the patient in advance of the procedure.

Who is a good candidate for bum injections?2020-08-15T12:48:42+00:00
Generally, if you wish to improve the size or shape of your buttocks, and wish to avoid more invasive surgery, buttock enlargement injections are recommended as the least invasive method.
  • You should be generally healthy, with no significant drooping (ptosis) of the buttocks or obvious skin laxity.
  • An assessment can be carried out at the time of the consultation.
How much bigger can I make my bum with Hyaluronic bum injections?2018-06-29T20:15:18+00:00

The maximum increase is around 600 ml in each buttock.  This will likely require 2 or more visits to the clinic spaced over a 4 week period.

This will depend upon your physical capacity to carry additional volume, tissue elasticity and the degree of augmentation desired.

Generally, more filler can be injected in one session if the patient is under sedation (asleep during the procedure).

What are the most important considerations?2020-08-15T12:42:56+00:00
  • The expertise of the plastic surgeon.
    • It is preferable to have a specialist buttock surgeon inject buttock filler, rather than a general doctor who is not a cosmetic surgeon.
  • The volume of filler required.
    • Some patients underestimate the amount of filler required and the cost of this expensive procedure.
  • The type of filler being injected.
    • The brand of hyaluronic acid being injected is very important to the quality of the result. Harley Buttock Clinic uses HYAcorp filler.
    • Less expensive fillers will reabsorb quickly and may leave lumps.
  • Whether to have the procedure while awake using a local anaesthetic, or whether to be put to sleep.
    • Having the procedure when sedated avoids the pain of filler being injected, and also allows the surgeon to reach deeper areas of the buttocks, improving the result.
Can I drive home after the procedure?2018-06-29T20:01:11+00:00

If you have the procedure under local anaesthetic (in other words you were awake during the procedure), then you can usually drive home afterwards.

If you have the procedure under sedation (asleep at the hospital), then you are not able to drive home after the procedure and you can not, by law, drive for a period afterwards.

Can I sit on my buttocks after the procedure?2018-06-29T19:58:03+00:00

The filler is still malleable (able to be moved under significant pressure) for the first few days after the procedure.

It would be better to sit on a soft chair or couch, or if possible lay on your front or side for at least the first few days.

After 5-7 days the filler is almost fully integrated and can’t be moved anymore.

How bad is the pain?2020-08-15T11:35:58+00:00
  • If you are having the filler injected at the hospital while asleep, you will feel no pain at all during the procedure.
  • If the filler is injected while you are awake (with a local anaesthetic), the pain will vary from patient to patient.

First, the buttocks are injected with a local anaesthetic.

The surgeon will not start injecting filler until the area has gone numb. However, the patient can still experience pain despite having had a local anaesthetic, and in exceptional cases, the pain can be significant.

Patients that have a low pain threshold should request the filler to be injected under sedation, at a private hospital on Harley Street, at additional cost.

In the first few days following the injections, the buttock area will feel heavy and there may be some swelling.

The patient may require some mild pain relief of the type typically available over the counter at a pharmacy without a prescription.

A course of antibiotics will be required to be taken following the buttock injections to minimise the risk of infection.

What is involved in the treatment?2018-06-29T19:52:51+00:00

The procedure is usually performed under local anaesthetic and you will be awake during the procedure.

The area to be treated will be completely numbed using a local anaesthetic, and the entire procedure takes around 30 to 45 minutes to complete.

Injections are made through tiny incision points that are usually invisible once healed.  The filler is injected using a thin cannula above the muscle.

The amount of filler injected depends on the degree of augmentation desired.

You can increase the volume of filler in 10 ml steps, depending on how much volume you wish to add to your buttocks.

How long should the results last?2020-08-15T11:37:22+00:00

The rate of metabolism of hyaluronic acid filler varies from person to person.

Premium fillers such as HYAcorp will tend to last longer than Economy fillers.

The results of bum injections are immediate, with the results usually fading from 9 to 18 months following the procedure.

The procedure will need to be repeated again in 9-18 months’ time, possibly requiring less filler on subsequent visits.

Patients returning for injections after 9-18 months typically require around half, or more, of the volume they received in their original procedure, to maintain their increased buttock volume.

Natural weight loss, or weight gain, may add to, or subtract from, the amount of filler required to stay the same size.

* Individual results may vary from person to person.

Are there any side-effects that I should be aware of?2020-08-15T11:42:48+00:00

The use of hyaluronic acid in buttock reshaping has been driven by the desire to find a less risky, non-invasive method of buttock reshaping that does not need to be performed under general anaesthetic.

By performing the procedure using a local anaesthetic, there are considerably fewer risks compared to buttock implant surgery.

There are also no incisions made, so there is little risk of scarring, and the downtime is usually minimal.

Hyaluronic acid-based fillers can be dissolved away using Hyaluronidase enzyme injections; instantly reversing the procedure if necessary.

This provides an additional safety net.

Your surgeon will discuss with you the full range of risks at your consultation.

How much do bum injections cost?2021-04-19T15:09:37+00:00

This depends on the volume of filler you require.  Someone who is slim, to begin with, will get a noticeable increase in buttock volume with a small number of buttock injections.

If the patient already has a large bottom, or, wishes to achieve a more dramatic increase in volume, they will require a high volume of filler to be injected.


As a rough guide:

A slim patient wanting a subtle, natural increase in buttock volume may require at least 100 ml of filler to each side, a total 200 ml, or more.

200 ml = £4,400

A patient with a medium build may require 150 ml, or more, to each side, a total of 300 ml, or more.

300 ml = £6,000

A larger patient or a patient requiring a significant increase in volume may require more than 300 ml to each side, a total of 600 ml or more.

600 ml = £11,100


Your surgeon will be able to advise you on the quantity of filler you are likely to require during your consultation.

*Individual results may vary from person to person.


Treatment of shape irregularity, or indents from trauma or scarring: 10 – 100 ml, approximately £1,500 – £3,000.


A consultation with a buttock surgeon is required in order to get a more accurate estimate of the volume of filler required.

Is Hyaluronic acid safe?2020-08-15T13:00:28+00:00

Hyaluronic acid ‘HA’ is a substance which is produced naturally in the body (however the hyaluronic acid used for buttock injections is manufactured).

Extensive trials since 2002 have shown no long-term serious side effects and have been clinically proven to be safe and effective.

HA-based fillers have been used in cosmetic surgery for over 20 years.

The HA used in cosmetic dermal fillers undergoes a process to form links between the molecules, making the HA more durable.

As the body recognises HA, there is minimal risk of allergic reaction or infection.  HA is a natural component of skin and plays an important part in skin health.  


Hyaluronic acid buttock enlargement injections

What is Hyaluronic acid?2020-08-15T11:52:58+00:00

You have hyaluronic acid throughout your body right now.



Hyaluronic acid or ‘HA’ is a component of the skin that is made naturally by the body.

HA is a naturally occurring polysaccharide and is known for its superb capacity to retain moisture.

An abundance of HA resides in the spaces between the skin cells, where it contributes to the plumpness, moistness, firmness, and suppleness of the skin.

Large amounts of HA is produced in the skin, but its levels dwindle as a person ages.

Hyaluronic acid is the basis for many cosmetic fillers such as for the lips and cheeks due to its volumising effect.

Harley Buttock and Breast Clinic

Note: Macrolane is no longer manufactured.

Information regarding Macrolane can be found here.

All images, videos and testimonials are based on the personal experiences of our patients and represent individual body shapes and results. Results may vary from person to person. All testimonials are provided voluntarily by our patients and clients and all photos and videos have been consented to and have not been altered in any way.

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Site Author Surgeon Dr Gary Horn

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Dr Gary Horn

Dr Horn Linkedin

Dr Gary Horn is a highly acclaimed Consultant Plastic and Reconstructive Surgeon with over 25 years of experience in buttock augmentation and reshaping with buttock implants and fat transfer. Dr Horn is a registered Plastic Surgeon in the UK (GMC 4267803) and Belgium.

SPECIALITIES: General Plastic Surgery, Cosmetic Plastic Surgery

LANGUAGES:  English, French


Dr Horn is qualified to perform a large range of procedures, including:
Buttock Implant Surgery (Gluteoplasty), Fat Transfer to Buttocks (Brazilian Butt Lift), Gluteal Sculpting (Brazilian Butt Lift without fat transfer), Buttock Injections (using Hyaluronic Acid)

Gluteoplasty with intramuscular silicone cohesive gel implants: a retrospective study of 50 cases.

For a comprehensive list of publications please see Dr Horn’s Linkedin.

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