The quality of Aftercare you receive will determine the quality of your result from a penis filler procedure.

Aftercare includes instructions on how to mould and shape filler once you have left the clinic and how to care for the penis in the days and weeks following your procedure.




Take the full course of antibiotics prescribed to you and follow any instructions given by the doctor.

You must not have sexual intercourse for 2 weeks following the procedure.

Explanation: Having sex before 2 weeks could cause an infection and will cause the filler to move. Masturbation and ejaculation are allowed following the procedure.

You must not go to the gym, engage in heavy physical work or exercise, or run for 1 week.

Explanation: Public gyms can have a high rate of bacteria. Exercises such as squats may disrupt the filler and the impact of running may move filler in the first week before it is set. Excessive sweating from physical activity can also spread infection.

You should be able to gain and maintain an erection in order to mould effectively.

Explanation: To mould filler effectively the patient must press the filler against their erect penis shaft. Pressing into filler against a flaccid or semi-erect penis will be less effective, as when the filler is pressed into there is less resistance from the penis shaft. Ask your doctor for a prescription for Erective Dysfunction (ED) medication such as Viagra if in doubt, or pick some up beforehand from Boots pharmacy, or online pharmacies.

You must wear supportive underwear for 1 week following the procedure.

Explanation: You must keep the penis supported (not hanging down). Wear supportive underwear for 1 week following the procedure, changing daily. Please wear supportive underwear on the day of your procedure.

If your penis is left hanging down and unsupported in boxer shorts or similar, gravity and the impact of walking may cause the filler which has not set to move down towards the head of the penis.

We have supportive underwear available at the clinic for £20 per pair, or please buy your own.


Dermal filler is best moulded, if necessary, when erect as the erect shaft provides resistance into which the filler can be pressed. If you have any doubt regarding your ability to achieve an erection after your procedure, bearing in mind your penis may be a little tender, please ask the doctor for a prescription of erectile dysfunction medication (Viagra).

There is some initial malleability to Hyaluronic acid-based fillers, (you can mould the filler by applying pressure to it to spread and flatten it out when erect). This can be of benefit in allowing you to smooth out small irregularities.

If you want to move the filler towards the head or the base, then you will be able to massage it somewhat in either direction while the penis is erect. It is best to start moulding as soon as possible (but a minimum of 4 hours after the procedure). As each day passes the filler will integrate with surrounding tissue and ‘set’ more firmly becoming harder to move and adjust.

Hyaluronic acid dermal filler will integrate with the penile tissue during the first 14 days. After this period any abnormal placement will need to be dissolved and reinjected, which is possible with Hyaluronic acid filler. Note: Dissolving is not possible with Ellanse. Hyaluronic acid filler can be spot dissolved to adjust small areas if necessary (there is no need to dissolve all the filler in order to make a correction).

The harder the Hyaluronic acid filler, the more difficult it will be to mould, please see



    • Wash your hands first and then attain an erection


    • Evaluate visually and by touch how the filler is distributed along the penis shaft


    • You should not try to spread filler to the underside of the penis (the side pointing to the floor when erect), spread along the top and sides only.


    • If there is any unevenness, for example, filler concentrated in one area and not others, then press firmly into the protruding filler using the erect shaft as resistance. Note: A light pressure will probably be insufficient, press firmly (but not so firmly as to cause significant pain).


    • If there are any small lumps of filler that do not spread easily, pinch them between your thumb and finger and they will gradually break


    • The earlier you start moulding the filler the better, by day 4 or 5 the filler is almost ‘set’ and becomes very difficult to mould.


      • If you can’t seem to smooth out the filler or if it has already set, it can be altered back in the clinic with a dissolving enzyme, if you have chosen a Hyaluronic acid filler.


      • Please call the clinic if you need guidance on how to mould the filler: 020 3633 0026 or text +44 7426 040086 – do not hesitate to call at any time, the earlier you contact us the better.



    It takes a couple of weeks for Hyaluronic acid dermal filler to stabilise, absorb water and diffuse. For this reason, it may be necessary to come back 2-4 weeks after treatment. If more product is required to ensure even coverage, this can be injected during the patient’s follow-up consultation at the patient’s expense.

    Bruising and tenderness will vary a lot from patient to patient. Bruising will often become more apparent a day or two after the procedure and may last for 1 week. Swelling can result for up to 2 weeks and may be quite impressive. If significant swelling remains beyond a few days, please contact our clinic. A small amount of residual swelling may be apparent for up to 2 weeks, or even 1 month in some cases, for example, if the patient has had a lot of filler.

    If you have any significant pain or difficulty passing urine, please call the clinic as soon as possible.

    Do not use penis extenders or other devices that fasten behind the penis head for at least 1 month. Tight straps, fasteners or vacuum devices such as pumps may cause the product to shift or cause indents.


    During the injection, we need to be careful to not place too much product towards the head of the penis, especially in uncircumcised men. If too much filler is placed near the head of the penis it may make it more difficult for some patients to retract the foreskin of the penis.

    The risk is higher in patients who already have mild to severe Phimosis (Phimosis is a condition in which the foreskin of the penis cannot easily be pulled back past the glans/ penis head when erect).

    If you notice excessive product around the head, try to massage this back up the shaft towards the base of the penis.

    It is particularly important for uncircumcised patients to keep the penis supported in supportive underwear (briefs), so that gravity, diffusion and the impact of walking does not cause filler to migrate down towards the head.

    Uncircumcised patients may be more prone to filler migrating to the foreskin region. This may present as small lumps of filler visible when the foreskin is retracted.

    Try to push these lumps out before the filler sets.

    If you are unable to, these small lumps may need to be spot dissolved back in the clinic (if you have used a Hyaluronic acid-based filler) and you may lose a small amount of filler as a result.

    If you are unsure of anything, call the clinic on 020 3633 0026.

Example of Supportive Underwear

Jockey Y-Fronts – Pack of 3 at John Lewis £22

Supportive Underwear Androfill Procedure



Penis Lengthening Surgery

Amount of Filler Required


Price Information











French Society of Plastic, Reconstructive and Aesthetic Surgery (SoFCPRE)

EBOPRAS - European Board of Plastic Reconstructive and Aesthetic Surgery
International Society of Aesthetic Plastic Surgery
General Medical Council Membership Dr Gary Horn

About the author

Clinic Director Dr Gary Horn

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Dr Gary Horn is the owner and director of the Androfill Clinic and is responsible for all website content.

Dr Horn is responsible for the outcome of all medical procedures.

Dr Horn is a registered Plastic Surgeon in the UK (GMC 4267803) and Belgium.

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Dr Gary Horn is a highly acclaimed Consultant Plastic and Reconstructive Surgeon and Uro-Andrologist with over 25 years of experience.

Dr Horn has published widely in international journals and is regularly invited to give lectures and to perform live surgery and non-surgical procedures.

Dr Horn has been filmed by the BBC for the Plastic Fantastic series.

In 2016 Dr Horn was filmed performing penis enlargement surgery for a BBC documentary The Penis Extension Clinic

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