Profhilo or Polynucleotides? What I Tell My Patients
- Juvenology Clinic
- Mar 25
- 8 min read
Updated: Mar 27
I get asked this question more than almost any other in my clinic.
A patient walks in, she's been doing her research, she's seen both treatments mentioned online, and she sits down and says: "I know I need something regenerative. But I have no idea which one to choose."
It's a great question. And it deserves a proper answer, not a quick summary table and a booking link. Because the difference between Profhilo and polynucleotides is not just a difference in ingredients. It's a difference in biology, mechanism, timeline, and the type of skin problem each one is designed to solve.
After years of using both treatments at Juvenology in Maidstone, I have developed a strong sense of which patients benefit most from which approach, when to combine them, and how to explain the distinction in a way that actually helps someone make a decision. That's what this article is.
Before I get into the comparison, if you want to understand the science behind polynucleotides in more depth, I've written two articles worth reading alongside this one. The first explains how polynucleotides work at a cellular level, and the second covers what polynucleotides actually are. Both will give you a stronger foundation for the comparison I'm about to make.
First, what both treatments have in common
It helps to understand the shared ground before exploring the differences.
Both Profhilo and polynucleotides are injectable treatments that work beneath the skin's surface to improve skin quality from within. Neither of them adds volume in the way a conventional dermal filler does. Neither freezes movement the way botulinum toxin does. Both stimulate the skin's own biology to produce more collagen and elastin. Both deliver results that look natural precisely because they work with the skin's own mechanisms rather than replacing them.
They are what aesthetic medicine now calls biostimulators: treatments that trigger biological activity rather than simply adding a substance. This is the fundamental shift in modern aesthetics away from the volume-first approach of the last decade toward the regenerative approach that 2026 is all about.
Both treatments can be used on the face, neck, décolletage, and hands. Both are performed by qualified practitioners using fine injections. Both have excellent safety profiles when administered correctly.
That's where the similarity largely ends.
What Profhilo actually is and how it works
Profhilo is an injectable skin booster composed of ultra-pure hyaluronic acid. But here's the important distinction that gets lost in most explanations: it is not a filler. Profhilo contains one of the highest concentrations of hyaluronic acid available in aesthetic medicine, 64mg per 2ml, and it is stabilised using a patented technology called NAHYCO that combines high and low molecular weight hyaluronic acid without chemical cross-linking agents.
Why does that matter? Because it means Profhilo doesn't stay put. Once injected, it spreads through the tissue in all directions, a property sometimes described as the "hydrolift" effect. Rather than sitting in a specific location and adding structure, Profhilo diffuses broadly through the dermis, delivering deep hydration to a large area of tissue.
The 5 BAP injection points are:
Upper Cheek (Zygomatic Protrusion)
Nasal Base
Lower Cheek
Jawline
Chin
The mechanism then goes in two directions simultaneously. The hyaluronic acid itself attracts and retains water, immediately and significantly improving tissue hydration. But simultaneously, the interaction of the high and low molecular weight HA with fibroblasts and stem cells triggers a bio-remodelling response: the production of new collagen, elastin, and additional hyaluronic acid. This is why Profhilo produces both fast and progressive results, initial radiance and glow within days, followed by gradual firmness and structural improvement over six to eight weeks.
From my cardiac nursing background, I think about Profhilo as working at the tissue environment level. It's improving the conditions around the cells, hydrating the extracellular matrix, creating the right biochemical environment for the skin to function better and rebuild more effectively. It's less about signalling a specific cellular change and more about restoring the quality of the environment in which cells operate.
In practical terms: Two sessions four weeks apart. Visible hydration and glow usually apparent within the first week.
Full bio-remodelling results at six to eight weeks. Duration typically six to nine months. Minimal downtime, some localised swelling for 24 to 48 hours.
What polynucleotides actually are and how they work
Polynucleotides are an entirely different class of treatment. They are highly purified DNA fragments derived from salmon, processed to remove all proteins and allergens until only the nucleotide chains remain. These are the building blocks of DNA and RNA, and they have profound effects on cellular behaviour when introduced into the dermis.
Where Profhilo works at the tissue environment level, polynucleotides work at the cellular signalling level. They communicate directly with fibroblasts and other skin cells, activating repair programmes, stimulating collagen and elastin synthesis, reducing oxidative stress, and modulating inflammation. They also support angiogenesis, the formation of new blood vessels, which improves microcirculation and tissue oxygenation.
The result is a genuine regenerative response. The skin isn't just being hydrated and encouraged to produce a bit more collagen. It's being told, at a molecular level, to repair, renew, and rebuild. This distinction matters enormously for certain types of skin damage, thin and fragile skin, photodamaged tissue, the under-eye area, inflammatory conditions like rosacea, and perimenopausal skin where fibroblast activity has been declining due to oestrogen loss.
One aspect I find genuinely exciting from a science perspective is the anti-inflammatory mechanism. In cardiac medicine, we understood inflammation as a driver of tissue damage and accelerated deterioration. Polynucleotides share this anti-inflammatory effect, and for patients whose skin ageing is being driven by chronic low-grade inflammation, what we now call inflammaging, this is enormously valuable. Profhilo does not address inflammation in the same targeted way.
In practical terms: A typical initial course involves three sessions three to four weeks apart. Results build progressively over eight to twelve weeks as cellular regeneration accumulates. Duration eight to twelve months. Maintenance two to three times per year. Minimal downtime, some redness and small localised bumps settling within 24 to 48 hours.
The comparison that actually matters
Profhilo | Polynucleotides | |
Mechanism | Restores the tissue environment. Hydrates the extracellular matrix and creates optimal conditions for cellular activity | Changes the behaviour of the cells within it. Activates fibroblasts directly via DNA signalling and stimulates repair programmes |
How collagen improves | By restoring the environment cells need to produce collagen | By changing what the cells themselves do |
Speed | Faster. Hydration and glow typically visible within the first week | Slower to show its hand. Results build visibly over 8 to 12 weeks. Patients are often disappointed early and delighted later |
Duration | 6 to 9 months | 8 to 12 months. Better for patients who dislike frequent appointments |
Anti-inflammatory | No significant anti-inflammatory mechanism | Yes, significant. Often the deciding factor for rosacea, reactive skin, chronic redness, or inflamed skin biology |
Delicate zones | Better suited to broader facial rejuvenation, neck and décolletage, where its spreading, hydrating properties shine | Particularly effective for the under-eye area, thin and crepey skin, and photodamaged tissue |
Perimenopausal skin | Supports hydration and general laxity but does not directly address fibroblast decline | Communicates directly with slowing fibroblasts in a way Profhilo doesn't. The stronger choice for patients in perimenopause or beyond |
Sessions | 2 sessions, 4 weeks apart | 3 sessions, 3 to 4 weeks apart |
Maintenance | Every 6 to 9 months | 2 to 3 times per year |
Combined | Restores the site conditions | Activates the workers. Together: the most comprehensive regenerative outcome available |
Can you use both together?
Yes. And in many cases I consider this the most powerful approach available.
The two treatments are biologically complementary in a way that isn't accidental. Polynucleotides work at the cellular level, activating fibroblasts and stimulating repair programmes. Profhilo works at the tissue environment level, hydrating the extracellular matrix and creating the ideal conditions for the cells that polynucleotides have activated to produce their best work. Each one improves what the other can achieve.
Polynucleotides | Profhilo | Combined | |
Role | The workers | The site conditions | Full construction project |
What it does | Activates fibroblasts, stimulates cellular repair and regeneration | Hydrates the extracellular matrix, creates optimal tissue environment | Cellular activation supported by ideal tissue conditions |
Where it works | Cellular level: DNA signalling, fibroblast activation, anti-inflammatory pathways | Tissue level: extracellular matrix, broad hydration, bio-remodelling | Both levels simultaneously |
Speed of results | Gradual: 8 to 12 weeks | Fast: visible glow within days | Progressive and visible |
Duration | 8 to 12 months | 6 to 9 months | Up to 12 months or longer |
Treats | Fragile, damaged, inflamed or perimenopausal skin | General laxity, dehydration, loss of radiance | Most patients wanting comprehensive regeneration |
Sessions required | 3 sessions, 3 to 4 weeks apart | 2 sessions, 4 weeks apart | Staggered: polynucleotides first, Profhilo at weeks 4 to 6 |
Anti-inflammatory | Yes, significant | No | Yes, via polynucleotides |
Maintenance | 2 to 3 times per year | Every 6 to 9 months | Every 6 months |
The typical protocol when combining is to stagger rather than layer simultaneously. I usually start with polynucleotides, allow the cellular activation to build over the first four to six weeks, then introduce Profhilo to provide the deep hydration and bio-remodelling environment that supports the regenerative work already underway. The results from this combined approach consistently outperform either treatment alone. When I explain it to patients I use a construction analogy: polynucleotides are the workers, Profhilo is the site conditions that let them build at their best.
A word on the longevity medicine context
Here is something I always raise with patients that most aesthetic clinics don't discuss. Both of these treatments will perform better, and last longer, when the systemic picture supports them.
Fibroblast function, the cellular activity that both Profhilo and polynucleotides rely on, is influenced by hormone levels, inflammation markers, vitamin D status, sleep quality, and nutritional adequacy. A patient whose systemic biology is optimised will respond better and maintain results longer than one whose internal environment is working against the treatment.
This is why at Juvenology I always consider the longevity medicine picture alongside the aesthetic treatment plan. A blood panel that reveals elevated inflammatory markers, low vitamin D, or hormonal imbalance affecting fibroblast function is information that directly changes how I approach a treatment protocol. If you haven't had your key biomarkers checked and you're investing in regenerative aesthetic treatments, you may be getting considerably less than you could be. Our blood tests panel gives you that picture.
Practical takeaways
If you take nothing else from this comparison, take these:
Profhilo and polynucleotides are both biostimulators but they work through entirely different mechanisms. Understanding those mechanisms is the key to choosing correctly.
Profhilo is the right choice when the primary concern is broad hydration, radiance, and general laxity. It works fast and its results are immediately visible.
Polynucleotides are the right choice when the concern is fragile, damaged, or inflamed skin, or when the goal is genuine cellular regeneration over time. They are particularly powerful for perimenopausal skin, the under-eye area, and sun-damaged tissue.
Combining both treatments, staggered over six to eight weeks, often produces the best overall results.
Neither treatment works in isolation from your systemic health. Optimising the biological environment through blood testing and longevity medicine supports both treatments enormously.
The most important variable in either treatment is the practitioner. Both require precise placement, sound anatomical knowledge, and the clinical judgement to assess which approach is right for each individual patient.
If you're unsure which treatment or combination is right for you, the best starting point is a consultation. At Juvenology in Maidstone, we take the time to understand your skin, your systemic health, and your goals before we recommend anything. Book through our website and we'll design a protocol that works with your biology, not against it.
Further reading and clinical references:
About the author
Nurse Marina is the founder of Juvenology Clinic in Maidstone, Kent, and one of the UK's leading voices in longevity-focused aesthetic medicine.
Marina trained as a registered nurse and spent six years as a cardiac nurse at KIMS Hospital in Maidstone, developing a deep foundation in vascular anatomy, systemic physiology, and evidence-based clinical practice. She subsequently worked as an aesthetic nurse specialist at Spencer Private Hospitals before founding Juvenology, where she combines regenerative aesthetic treatments with longevity medicine to address both the visible and biological dimensions of ageing.
Marina holds qualifications in hormonal health from the Marion Gluck Academy and brings a uniquely medical perspective to aesthetic practice, one shaped by years of working in high-stakes cardiovascular medicine where anatomical precision and evidence-based protocols are non-negotiable.
She is NMC Registered, BACN Member, JCCP Verified, ACE Group Registered, a Member of the Royal College of Nursing, ICO Registered, and recognised by the Professional Standards Authority.
Juvenology is based in Maidstone and serves patients across Kent, including Tunbridge Wells, Sevenoaks, Kings Hill, West Malling, and beyond.