TOPIC: How Long Do Penis Enlargement Results Last? (HA, PMMA, PERM & Lengthening)

Quick Answer: HA girth filler lasts ~12–48 months (fades via hyaluronidase + macrophages); PMMA is permanent (collagen scaffold); PERM (fat transfer) is life-lasting once grafts integrate; MAXL (non-surgical length program) delivers durable gains with good compliance and optional light maintenance; surgical lengthening is a permanent anatomic change. Longevity hinges on biology, technique, and aftercare.

Longevity at a Glance

• HA Girth Filler: ~12–48 months. Cross-linked HA slows enzyme access; small top-ups before a full fade maintain the look.
  
• PMMA Girth Filler: Permanent via a collagen scaffold response when placed correctly.
  
• PERM (Fat Transfer): Life-lasting after revascularization/integration; behaves like native tissue.
  
• MAXL Program (Non-Surgical Length): Durable length gains with patient compliance (structured traction/conditioning). Most patients only need light, ongoing traction to preserve inches over time.
  
• Surgical Lengthening (e.g., MegaMAXL / Repositioning): Permanent change to suspensory support; weeks 1–8 of traction & scar care protect visible length.
  
• PERMMAXL (Length + PERM): Permanent length + life-lasting girth.

Why Some Options Last Longer
Biology • Technique • Aftercare.

Biology

• HA: Your hyaluronidase enzymes trim the gel; macrophages digest fragments; lymphatics clear them—so HA is designed to fade.
  
• PMMA: Triggers a permanent collagen scaffold around the microspheres.
  
• PERM: Living grafted fat becomes part of you after it revascularizes—it doesn’t “wear off.”
  
• MAXL / Lengthening: Mechanical remodeling (MAXL) and anatomic change (surgery) create enduring length; early behavior (traction) determines how much becomes visible day-to-day.

Technique & Expertise
Correct plane & distribution, urology-led planning, and conservative shaping reduce irregularities and support long-term aesthetics.

Aftercare & Habits
Weeks 1–8 are the make-or-break window: traction (for length), edema/scar control (for contour), no smoking, and good metabolic health. Overall weight change has negligible direct effect on penile fat graft volume; the bigger risk is a larger pubic fat pad hiding length (buried penis).

Can HA results be made “permanent”?
Yes—via FusionThick™.
If you like your current HA look, FusionThick™ can add PMMA to build a permanent collagen scaffold around the existing HA, preserving your shape and making the result permanent.

Maintenance Expectations

• HA: Micro top-ups every 6–24+ months.
  
• PMMA: No routine maintenance; optional refinements only.
  
• PERM: Rare polish for symmetry if desired; otherwise life-lasting.
  
• MAXL: Durable if you follow the plan; most maintain with light traction over time.
  
• Surgical Lengthening: Traction/scar protocols early; no long-term “upkeep” once stabilized.

Candidacy & Safety (read first)
Patients with compromised healing—e.g., active smokers, immune suppression, poorly controlled diabetes, and some aged >62—may not be surgical candidates. Non-surgical paths (HA, PMMA, MAXL) can be safer depending on the case.

Full guide with timelines & the Longevity Matrix:
www.rejuvall.com/how-long-do-penis-enlargement-results-last/

Regarding "FusionThick™" -- I had remarked on a separate topic regarding the potential redundancy of what is otherwise a seemingly unusual approach --> to combine temporary fillers with those that are permanent. In other words, what advantage is there to make Hyaluronic Acid (HA) permanent via PMMA when one could simply do strictly PMMA? What are the advantages of this combination?

I know some combinations of fillers have been tried (whether simultaneous or in succession), but HA and PMMA strike me as the odd-couple. This isn't a criticism, just a legit & sincere inquiry, since there is reason to believe that innovations of this sort could prove more effective (perhaps) than the already well-known conventions.

Regarding "FusionThick™" -- I had remarked on a separate topic regarding the potential redundancy of what is otherwise a seemingly unusual approach --> to combine temporary fillers with those that are permanent. In other words, what advantage is there to make Hyaluronic Acid (HA) permanent via PMMA when one could simply do strictly PMMA? What are the advantages of this combination?

I know some combinations of fillers have been tried (whether simultaneous or in succession), but HA and PMMA strike me as the odd-couple. This isn't a criticism, just a legit & sincere inquiry, since there is reason to believe that innovations of this sort could prove more effective (perhaps) than the already well-known conventions.

As I said a couple of times in that other thread, Dr. Carney first puts down a foundational layer of HA and lets it set before adding PMMA because it greatly reduces the risk of nodules and granuloma you get when PMMA is injected into a "virgin" penis.

As I have also said before, nodules and granuloma are NOT "normal" or "to be expected" after girth enhancement, with ANY kind of filler. There are things a practitioner can do to mitigate these complications, things Dr. Carney has discovered as a pharmacist, plastic surgeon, and urologist, and practices in his injection technique. There's a reason we're the go-to clinic for repairs of every kind of penis enlargement imaginable, and Dr. Carney has learned quite a lot from other practitioners' mistakes about what to do and what not to do when performing girth injections.

Again, here is our FusionThick page that further explains the whys and wherefors of why Dr. Carney lays down that foundational layer of HA before injecting PMMA: www.rejuvall.com/permanent-girth-injections/

Please let me know if you have any other questions or questions about the information on that page.

I’m I understanding the process will require three visits and separate injections for the recommended process….2 visits for the two recommended injections of HA and a subsequent visit for 1 injection of Bellafill…..Is this correct?

Also what is the minimum time period for the entire process if done at your facility?

Does the injection of the Bellafill stop the decay of the HA? If not how is the final Girth size predicted?

Thanks

I’m I understanding the process will require three visits and separate injections for the recommended process….2 visits for the two recommended injections of HA and a subsequent visit for 1 injection of Bellafill…..Is this correct?

Also what is the minimum time period for the entire process if done at your facility?

Does the injection of the Bellafill stop the decay of the HA? If not how is the final Girth size predicted?

Thanks

Great questions! Thank you for asking. I'll try to explain:

1) Well, yes and no. The number of sessions you would need would be determined by your starting girth size and your goal girth size, as well as whether you've had any penile enlargement procedures prior. So, the number of sessions and how much of which filler would be determined at your clinical visit with Dr. Carney once he examines you. Most of our first-time patients are able to get filler the same day as their in-person visit with Dr. Carney, eliminating the need for extra travel to and from our offices. Also to note is most of our patients see a 0.5"-1" increase in girth after the HA.

2) This also depends on the patient and how many sessions he would need. You're able to get girth filler at Rejuvall every 6-8 weeks, depending on individual healing time. Exact timing of appointments would also be dependent on schedule availability. Because Dr. Carney is also a urologic trauma surgeon, he splits his time between Rejuvall and Georgia-area nonprofit hospitals, so his availability at Rejuvall is slightly limited.

3) Because hyaluronic acid is a natural substance found naturally occuring in the body, it is eventually going to be broken down by enzymes and macrophages just like any other hyaluronic acid in the body. The HA is where we "proof" the tissue to prevent nodules and granuloma and get you to your desired size, then we add the PMMA to convert the size gained from HA to permanent girth once you've reached your goal. That is my understanding, but I will ask Dr. Carney about specifics when I get to sit down with him in the office tomorrow evening. In terms of how the final girth size is predicted, that is also something I will need to ask Dr. Carney so I make sure I get you the correct answer. However in the meantime, you can try playing with our girth size calculator on our website: www.rejuvall.com/penis-size-calculator/

And here is our page all about FusionThick: www.rejuvall.com/permanent-girth-injections/ Let me know if you have any more questions I can help answer.

Thank you for the responses and to any further information you gather from the doctor. I. Hop e to visit with you sometime in the future.

Thank you for the responses and to any further information you gather from the doctor. I. Hop e to visit with you sometime in the future.

Always happy to help in whatever way I can! And we'll certainly be looking forward to meeting you.

To answer that last question. . .

Does the injection of the Bellafill stop the decay of the HA? If not how is the final Girth size predicted?

Dr. Carney (who is also a pharmacist so he understands how these fillers work molecularly) said that the addition of the PMMA to the HA does slow down the metabolism of the HA dramatically but that the HA will still eventually all be broken down by the body. And in regards to predicting the final Girth size, Dr. Carney said, "as big as they want." Just keep in mind that the amount of filler you would need depends mostly on your starting length. A shorter penis means less filler while a longer penis will need more filler to reach the desired Girth size.

Are you able do do FusionThick/PMMA over existing HA/calcium hydroxyapatite hybrid filler (for example what Dr. Leonardo on here offers)?

Are you able do do FusionThick/PMMA over existing HA/calcium hydroxyapatite hybrid filler (for example what Dr. Leonardo on here offers)?

To be honest, I'm not sure. We routinely add PMMA to already existing HA, but I do not know if we'd had any cases with the hybrid filler. I would have to ask Dr. Carney directly. Unfortunately, Dr. Carney is in trauma surgery at the hospital and won't be back in our offices until the 28th of October, but I'll shoot him a text to ask and see if I can get an answer for you before then. I don't imagine it would be a problem though.

Are you able do do FusionThick/PMMA over existing HA/calcium hydroxyapatite hybrid filler (for example what Dr. Leonardo on here offers)?

To be honest, I'm not sure. We routinely add PMMA to already existing HA, but I do not know if we'd had any cases with the hybrid filler. I would have to ask Dr. Carney directly. Unfortunately, Dr. Carney is in trauma surgery at the hospital and won't be back in our offices until the 28th of October, but I'll shoot him a text to ask and see if I can get an answer for you before then. I don't imagine it would be a problem though.

@zaddy I just heard back from Dr. Carney about this, and he said "yes, probably" but that he would first need to do a urologic exam to make sure there are no potential complications. I hope that helps!