Treatments

FAT TRANSFER VS FILLER

Both methods add girth. Fat transfer moves your own fat from the stomach into the penis under general anaesthetic; hyaluronic acid filler is injected in a 30-minute clinic visit. The table below sets the two side by side on the points that decide most patients, with the detail for each method underneath.

Factor	Fat transfer	Penis filler (HA)
Procedure	Surgery under general anaesthetic, 1–2 hours in a private hospital, day case	Injections under local anaesthetic, about 30 minutes, walk in – walk out
Price	£5,800 all-inclusive, with LipiVage or Puregraft fat preparation (PRP P-Shot add-on +£950)	From £1,490 for 10 ml; see the price list for each filler
Typical gain	Typically 20–30% initially; much of it reabsorbs	Up to about 1 inch of girth per treatment; roughly 0.5″ per 10 ml
How long it lasts	Most fat reabsorbs in 3–12 months; repeat surgery needed to maintain size	Up to half the filler metabolised in 12–18 months; top-ups need less product
Reversible?	Only by surgical removal of the fat	Yes — hyaluronidase dissolves the filler if ever required
Texture	Soft, ‘fatty’, as fat feels elsewhere on the body	Firm and realistic with the Androfill deep-cannula technique
Return to sex	4 weeks	2 weeks
Time off work	About 1 week for desk work; 4–6 weeks before heavy lifting	None needed
Common complications	Swelling up to 3 months, bruising, lumps of necrotic fat, uneven results, infection; fat embolism is very rare but has been fatal	Swelling up to 1 month, bruising, temporary unevenness (mouldable in week one), infection (rare)
Fertility, erections, long-term health	No impact	No impact

Individual results vary from person to person. Prices are current UK prices; the surgery page and price list carry the detail.

Method 1 · Surgical

Penis Fat Transfer

£5,800 including LipiVage or Puregraft fat preparation · PRP P-Shot +£950

Fat from the stomach is harvested by liposuction and injected into the penis under general anaesthetic.

Liposuctioned fat prepared for transfer to the penis

Advantages

Safer than injecting permanent substances such as silicone, PMMA or paraffin, or implanting a silicone sleeve
Liposuction is part of the procedure, removing unwanted fat from the stomach
A small amount of fat may survive for years, although most is reabsorbed in 3–12 months
The weight of the fat adds flaccid length, which can make ligamentolysis (lengthening surgery) unnecessary

Disadvantages

Temporary — most fat reabsorbs in 3–12 months, so future surgery is needed to keep the size
Expensive — £5,800 plus future top-ups
Irregularities — lumps, nodules of necrotic fat, scar tissue
Soft texture — the penis is surrounded by a layer of fat, which feels as fat does elsewhere
Risks of surgery and hospital admission
Difficult to reverse except by surgical removal
4 weeks before resuming sex

In more detail

Higher risk than filler

Fat transfer surgery is higher risk than penis filler injections because of the general anaesthetic and a greater risk of complications, including the rare but fatal risk of fat embolism.

Fat is not found naturally in the penis

Fat is made by the body and found in most places, but the body does not put any fat in the penis naturally. The penis needs to be firm when erect rather than surrounded by a layer of fat.

Temporary — usually lasts 3 to 12 months

Fat is reabsorbed by the body over 3–12 months, after which top-ups are required. A small amount can survive for a very long time, but the result is not permanent.

Fat is living tissue and its survival depends on establishing a new blood supply after removal from the stomach. There is no fat in penile tissue naturally, so survival is low, and the fat that does survive is distributed unevenly along the shaft, with areas of survival and areas of fat necrosis. The result is lumpiness.

Why “permanent” is misleading

Claims that fat transfer gives a permanent result are misleading. A small amount of the transferred fat may survive for a long time, but any permanent gain is most likely to be hard nodules of necrotic fat with calcification. In almost all cases the transfer needs repeating to smooth out irregularities and maintain any increase in size.

Size increase typically up to 1 inch

Girth gains of up to 2 inches are possible, as with filler, but this requires multiple fat transfer surgeries. More surgery means more girth.

Recovery

About 1 week off desk-based work, 4–6 weeks before heavy lifting or strenuous exercise, and no sex for 4 weeks. Surgery takes 1–2 hours in a private hospital as a day case.

Most common complications

Swelling, which can last up to 3 months
Bruising (2 weeks)
Infection (rare, but serious); antibiotics are prescribed
Skin fibrosis and scarring
Skin necrosis requiring surgical removal
Fat necrosis and fat nodule formation
Embolism and death (very rare)

Fat transfer is generally safe for penis enlargement; in our experience the results are inferior to dermal fillers. Individual results vary.

Method 2 · Non-surgical

Penis Filler (hyaluronic acid)

From £1,490 for 10 ml, all-inclusive · full price list

Hyaluronic acid filler injected along the shaft under local anaesthetic, using the Androfill deep-cannula technique.

Advantages

Safe — hyaluronic acid has been used in the body for more than 20 years
Reversible — the filler can be altered or dissolved should it ever be required
Effective — filler procedures have a high rate of patient satisfaction
Texture — firm and realistic compared with fat transfer
No surgery, no hospital admission; a 30-minute procedure
2 weeks before resuming sex
The weight of the filler adds flaccid length, making ligamentolysis unnecessary

Disadvantages

Temporary — up to half the filler is likely to have been metabolised in 12–18 months
Cost — from £1,490 plus future top-ups
Irregularities are possible; the filler can be moulded during the first week while it sets
Low but real risks of injection (see below)
Too much filler, the wrong filler, or filler injected too shallow gives substandard results — the Androfill technique places it at the correct depth and distribution

In more detail

Low risk

Hyaluronic acid penis fillers are lower risk: no surgery is necessary and the procedure is reversible by injecting hyaluronidase, which dissolves the filler if necessary.

Hyaluronic acid is found naturally in the penis

A small amount of hyaluronic acid occurs naturally in the penis, although not enough to make any difference to size. It is produced naturally and found throughout the body.

Temporary — 12 to 18 months

Hyaluronic acid is metabolised over 12–18 months, at which point most patients have up to 50% of the filler remaining. In rare cases it is absorbed more quickly or lasts longer.

Manufacturer claim: “When treated again after 2 years, patients needed less product to achieve their results.” (Juvéderm; the studies concern cheek treatment.) Results vary from person to person.

Permanent alternatives

Permanent substances such as PMMA or silicone are not licensed for this use in the UK because of the serious complications they cause. There is some indication that hyaluronic acid stimulates collagen production, giving longer-lasting results.

Size increase typically up to 1 inch

Girth gains of up to 2 inches are possible, as with fat transfer, but this requires a large volume of filler over more than one visit. More filler means more girth; our size gain estimator shows the projection for your measurements.

Recovery

No time off work is needed. The procedure takes about 30 minutes on a walk in – walk out basis. Resume sex after 2 weeks.

Most common complications

Swelling, which can last up to 1 month
Bruising (1 week)
Filler migration — rare after the first week with the Androfill technique
Uneven distribution — mouldable during the first week; can be altered or dissolved with hyaluronidase
Infection (rare); new patients take a 5-day course of antibiotics

Hyaluronic acid fillers are a lower-risk method that has largely replaced fat transfer for penis enlargement: smooth and firm with the Androfill technique, used in the UK by Androfill since 2012 and for longer in South Korea and Japan (source). Individual results vary.

What the complications look like

Lumps of necrotic fat after penis fat transfer — Fat transfer: lumps of necrotic fat

Uneven, lumpy result after fat reabsorption following penis fat transfer — Fat transfer: uneven result after reabsorption

Lump of fat after penis fat transfer — Fat transfer: a single hard lump

Before and after Androfill hyaluronic acid penis filler — Filler: before and after Androfill — more results

Both procedures on video

Dr Gary Horn performing fat transfer surgery, 2016

Androfill filler procedure, cannula deep to the dartos fascia · performed live at IAAGSW, 2018

Author: Dr Gary Horn

GMC Registered Plastic Surgeon

Androfill Clinic Director

Medically reviewed by: Dr Greta Peciulyte

GMC Registered Urologist

Androfill Clinical Team

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Filler for the head of the penis — technique, dose and results.

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The filler material explained — safety, reversibility and longevity.

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Written and medically reviewed by Dr Gary Horn — consultant plastic and reconstructive surgeon, GMC 4267803. Reviewed by Dr Greta Peciulyte, Urologist, GMC 7539240. Last reviewed 28 August 2026. General information only, not a substitute for a consultation. Individual results vary.