Frequently asked questions
Penis Enlargement FAQ
Straight answers to the questions men ask us most about non-surgical penis enlargement with dermal filler.
Common questions.
The procedure
What happens during the appointment?
After a consultation, numbing cream is applied and left for about 30 minutes. Local anaesthetic is then injected to minimise discomfort, and the doctor places the filler into a layer within the shaft, instantly thickening the penis. If you work in an office you can usually return to work the same day; avoid strenuous manual labour or heavy lifting for about a week, or as instructed by your doctor. See the Androfill Method for the full process.
Where exactly is the filler placed?
The filler is placed in the soft tissue just beneath the skin of the shaft, outside the main erectile structures. It is distributed evenly with a blunt-tipped cannula through a small access point — this helps give a smooth, even result and keeps the filler away from the deeper erectile chambers.
How much filler will I need?
It depends on your starting size, your anatomy and your goals. Most men start with around 10 to 15 ml and build girth up over more than one session, as girth is cumulative. Dr Anderson recommends a volume after measuring you. Try our how much filler estimator.
Are the results immediate?
Yes — a girth increase is visible immediately. Some initial swelling settles over the following weeks, and the final, settled result appears after that. The filler can be gently moulded in the first few days before it sets.
Does it add length, or only girth?
The treatment reliably increases girth (circumference) and can improve flaccid appearance. It does not reliably increase erect length. Being honest about this matters more to us than a sales pitch.
Safety, risks & reversibility
Is penis filler safe?
Complications are exceedingly rare when a reversible dermal filler is injected by an experienced doctor. Around 20,000 reversible penis filler procedures are performed worldwide each year. It is considered the safest medical approach available to thicken the penis, and is considerably safer than surgery. Like any procedure it still carries risks, which are discussed with you beforehand.
What are the risks and side effects?
Common, temporary effects include bruising, swelling and tenderness. Less commonly there can be lumps or asymmetry, and — uncommonly — infection, filler migration, vascular problems, or the need for correction or dissolving. Results are not guaranteed and vary from person to person. All risks are discussed and consented before treatment.
Is the procedure reversible?
Yes. Hyaluronic-acid filler can be dissolved away with an injection of an enzyme (hyaluronidase), or simply left to break down naturally. In the unlikely event you wish to return to your original size, you can — one of the key reasons reversible filler is safer than other methods.
Will it affect my erections or sensation?
The filler sits in a superficial layer of the shaft, outside the erectile chambers, so it is not designed to interfere with erectile function, and patients typically report no change in sensation or orgasm. As with any procedure there is some risk, which is discussed at consultation.
What if I get a lump or unevenness?
The filler is malleable in the early days and can be gently moulded. If any unevenness remains, you return for a review, where it can usually be smoothed, topped up, or dissolved. A follow-up review is part of the process.
Is the filler genuine and traceable?
Yes. Androfill uses only genuine, traceable, medical-grade hyaluronic-acid dermal filler. We never use unknown or permanent products, and we do not inject over unknown fillers from elsewhere.
Results, look & feel
How long does the result last?
Hyaluronic-acid filler is gradually metabolised by the body over roughly 12 to 24 months, with about half typically remaining at 12–18 months. Top-up procedures maintain or build on the result over time.
Will it look and feel natural?
The aim is natural proportion, not extreme size. When erect, most patients notice no substantial change in firmness; when flaccid it may feel slightly softer or fuller depending on the volume used.
Do partners prefer girth or length?
There is evidence that the majority of women prefer girth over length, which is exactly what this procedure provides. In a University of Texas study, 90% of partners preferred a wider penis while only 10% preferred a longer one. (A separate UCLA SPAN Laboratory study reached a similar finding but has not been peer-reviewed.)
What is the recovery like?
Mild bruising and swelling around the injection site is possible and usually settles within 3–7 days. Sex can generally be resumed after about 14 days, or as advised by your doctor. The filler can be gently moulded in the first few days before it sets.
Suitability & practical
Am I a normal size?
Most of our patients have an average penis size. Men choose girth enhancement to increase self-confidence, not necessarily because anything is wrong. If you want a larger penis you are in the majority — but we will always give you an honest assessment. See men & penis size.
Who is suitable — and who isn't?
Suitable candidates are healthy adult men with realistic expectations. It may not be suitable if you have an active infection, certain medical conditions, or expectations that filler cannot meet. Suitability is confirmed at a private consultation, and we will tell you honestly if the procedure is unlikely to help you.
I've had filler or surgery before — can I still have Androfill?
Often yes, but tell us first. Injecting over unknown or permanent products can carry interaction and infection risk, so any previous treatment needs a confidential assessment before we proceed.
Why not surgery or fat transfer?
Penile surgery is a higher-risk and largely obsolete approach to girth, with results generally inferior to filler — for penis thickness, surgery is no longer necessary. Fat transfer is surgical and less predictable, and much of the fat is reabsorbed over time. See our fat transfer vs filler comparison.
Can I travel or fly in for treatment?
Yes. Androfill holds clinics across New Zealand — Auckland, Wellington, Christchurch and New Plymouth — and Dr Anderson can help arrange travel. Allow time for any swelling to settle and avoid flying immediately after treatment, as advised by your doctor.
How do I pay?
Credit and debit cards are accepted. The Androfill procedure is not currently covered by public or private health insurance. See current figures on our price information page.
Every treatment is individual, and results vary from person to person. Nothing here is a promise of a specific outcome — the right information for you comes from a private consultation and assessment with Dr Anderson.
References & further reading
The information above is grounded in the published literature on hyaluronic-acid dermal filler for penile girth enhancement. The sources below are provided for patients who wish to read further; they are peer-reviewed papers, professional-society statements and independent research.
- Systematic review of hyaluronic-acid filler for penile girth augmentation — safety, efficacy and complication profile. Read on PubMed Central (PMC)National Library of Medicine · PMC8269832
- Sexual Medicine Society of North America (SMSNA) position statement on injectables for penile augmentation, 2024. Read in The Journal of Sexual MedicineOxford Academic · J Sex Med 2024
- Clinical outcomes and complication grading in a large series of penile girth filler patients. Read in The Journal of UrologyAmerican Urological Association
- Partner preference for penile girth over length. Read in BMC Women's Health (University of Texas study)BioMed Central
- Androfill's collated list of medical studies on dermal-filler penile augmentation. Medical studies →Androfill New Zealand
Still have a question?
Ask Dr Anderson directly in a private, discreet consultation across New Zealand.
About this page
Last reviewed on 28 July 2026.
Written and medically reviewed by Dr Brent Anderson (MBChB), Fellow of the New Zealand Society of Cosmetic Medicine, who leads Androfill in New Zealand.
Information on this page is drawn from the published literature on hyaluronic-acid penile filler and from Androfill’s clinical experience since 2012. It is general information, not a substitute for a consultation — your own suitability, options and risks must be assessed in person by your doctor.