Profhilo vs Polynucleotides: What’s the Difference and Which Is Right for You?

If you are researching injectable skin treatments, you have probably come across both Profhilo and polynucleotides — and wondered whether they are the same thing. They are not. Profhilo is a stabilised hyaluronic acid treatment that hydrates and firms the skin, while polynucleotides are DNA-derived regenerative treatments that help repair and strengthen skin at a cellular level. Both improve skin quality, but they do it in different ways, suit different concerns, and deliver results on different timelines. In this guide, the team at our nurse-led, CQC-registered clinic in Moston, Manchester explains the key differences and how to work out which is right for you.

What is Profhilo?

Profhilo is an injectable skin remodelling treatment made from stabilised hyaluronic acid — a substance your skin produces naturally to hold moisture. Unlike a dermal filler, Profhilo is not designed to add volume or change the shape of your face. Once injected, it spreads evenly through the skin, drawing in hydration and stimulating collagen and elastin production over the following weeks.

A typical course involves two sessions, around four weeks apart, using a small number of precise injection points on each side of the face. It can also be used on the neck and hands. Profhilo tends to suit skin that looks dry, dull or crepey, or skin showing early signs of laxity — the kind of changes people often describe as looking “tired” rather than lined.

You can read more about how we deliver this treatment on our Profhilo treatment page.

What are polynucleotides?

Polynucleotides are a newer category of regenerative injectable. They are made from purified DNA fragments, most commonly derived from salmon or trout, processed to a high level of purity for medical use. Rather than hydrating the skin directly, polynucleotides work by stimulating fibroblasts — the cells responsible for producing collagen and elastin — and supporting the skin’s own repair processes.

Because they strengthen and repair rather than simply hydrate, polynucleotides are often recommended for thin, fragile or damaged skin, for the delicate under-eye area, and for skin affected by sun damage or inflammation. A course typically involves two to four sessions, spaced a few weeks apart, with results building gradually as the skin repairs.

Our polynucleotide treatment page covers the treatment process in more detail.

Profhilo vs polynucleotides: key differences

The simplest way to understand the difference: Profhilo hydrates and firms; polynucleotides repair and regenerate.

A few points from this table are worth expanding on.

Speed vs depth. Profhilo generally produces a visible improvement sooner — many patients notice a hydrated, firmer look within a few weeks of their first session. Polynucleotides work more gradually because they are supporting genuine tissue repair, which takes time. Neither timeline is “better”; they reflect two different mechanisms.

Hydration vs repair. If your main concern is skin that looks dehydrated, dull or slightly lax, Profhilo directly addresses that. If your skin is thin, crepey under the eyes, or showing damage the surface products cannot reach, polynucleotides address the underlying structure.

Duration. Results from both treatments are temporary, and individual results vary. Maintenance sessions are usually recommended to sustain improvement over time.

Is Profhilo a polynucleotide?

No. This is one of the most common points of confusion, because both are often described as “skin quality” injectables and neither is a filler. Profhilo is made from hyaluronic acid; polynucleotides are made from DNA fragments. They belong to different treatment categories, work through different mechanisms, and are chosen for different reasons — which is exactly why a consultation matters before deciding between them.

Which gives better skin hydration results?

For hydration specifically, Profhilo has the more direct effect. Hyaluronic acid is a humectant — it binds water within the skin — so Profhilo’s primary action is to boost moisture levels and improve the bounce and glow that come with well-hydrated skin.

Polynucleotides improve hydration too, but indirectly: as the skin’s structure and barrier improve, it holds moisture better. So if dehydrated, dull skin is your main concern, Profhilo is usually the more logical starting point. If dehydration is one symptom of thinner, weaker or damaged skin, polynucleotides may address the underlying cause more effectively. This is the kind of distinction we assess at consultation rather than asking you to self-diagnose.

Which treatment is right for you?

There is no universal answer — the right choice depends on your skin, your goals and your medical history. As a general guide:

Profhilo may be the better fit if your skin looks dry, dull or tired, you are noticing early crepiness or mild laxity on the face or neck, and you want a noticeable improvement in glow and firmness within weeks.

Polynucleotides may be the better fit if your main concern is the under-eye area, your skin is thin, fragile or sun-damaged, or you want to invest in longer-term skin health and resilience rather than a faster cosmetic refresh.

Some patients benefit from both, staged over time as part of a planned treatment journey. Others are better suited to a different option altogether — for example, skin booster treatments sit in a related category and may be more appropriate for some skin types and budgets.

A few suitability points to be aware of before booking:

• Polynucleotides are fish-derived, so they are not suitable if you have a fish or shellfish allergy.
• Neither treatment is recommended during pregnancy or breastfeeding.
• Certain skin conditions, medications and medical histories can affect suitability for either treatment.

This is why every patient at our clinic has a consultation with a qualified clinician first. If a treatment is not right for you, we will tell you — and if no treatment is the right answer, we will tell you that too.

Can you do Profhilo and polynucleotides at the same time?

Yes — the two treatments are complementary and are often used together as part of a staged plan, though not usually in the same appointment. A common approach is to begin with polynucleotides to strengthen and repair the skin, then add Profhilo for hydration and firmness, with your practitioner sequencing the sessions based on how your skin responds. Whether a combined plan is appropriate, and in what order, is decided at consultation rather than by a fixed formula.

Polynucleotides can also be combined with skin boosters in some treatment plans — again, sequencing and suitability are practitioner-led decisions.

What results can you expect, and when?

We are often asked about “before and after” expectations for both treatments, so here is an honest picture of the typical timeline. With Profhilo, any small bumps at the injection sites usually settle within 24–48 hours; a visible improvement in hydration and glow often appears within two to three weeks, with the best results typically seen a few weeks after the second session. With polynucleotides, changes build more gradually across the course, with improvements in texture, elasticity and the under-eye area becoming more apparent as the skin repairs over several weeks.

Two important caveats. First, results vary between patients — factors like age, skin condition, lifestyle and sun exposure all influence the outcome, and no responsible clinic will promise a specific result. Second, both treatments produce natural-looking change, not a dramatic transformation. Patients typically look fresher and healthier rather than “done” — which is precisely why many people choose them. You can see examples of our patients’ results in our gallery.

Side effects, downtime and risks

Both treatments are well tolerated by most patients when carried out by an appropriately trained clinician, but no injectable treatment is risk-free, and it is important to understand what to expect.

Common, short-lived effects for both treatments include small raised bumps at the injection sites, redness, mild swelling, tenderness and occasionally bruising. These typically settle within a day or two for most patients.

Less common risks include prolonged swelling, lumpiness that persists beyond a few days, and — as with any injection — a small risk of infection. Uneven results are more likely when treatment is carried out by an inexperienced injector, which is one reason practitioner training and clinical standards matter so much with injectable treatments.

Aftercare makes a genuine difference to both comfort and results. For the first 24–48 hours after either treatment, avoid touching or massaging the treated area, applying makeup over the injection sites, alcohol, strenuous exercise, saunas, steam rooms and direct sun exposure. We provide full written aftercare guidance after every treatment, and patients can contact us directly with any concerns during recovery.

All treatments at Manchester Aesthetics Clinic are delivered under medical governance by qualified clinicians, with a full medical history taken at consultation and honest advice about whether a treatment is suitable for you.

How much do Profhilo and polynucleotides cost?

Costs depend on the treatment chosen, the number of sessions your skin needs, and whether treatments are combined as part of a wider plan. Rather than quoting a single figure that may not reflect your treatment plan, we confirm costs transparently at consultation, before you commit to anything. Current prices and any seasonal offers are listed on our special offers page.

Book a consultation in Manchester

If you are weighing up Profhilo and polynucleotides, the honest answer is that the right choice is individual — and the best way to find out is a face-to-face skin assessment. At Manchester Aesthetics Clinic, every treatment journey begins with a consultation with a qualified clinician at our nurse-led, CQC-registered clinic in Moston, serving patients across Manchester and Greater Manchester. We will assess your skin, talk through your goals, explain suitability, risks and realistic outcomes, and give you honest, no-pressure advice — including telling you if neither treatment is right for you.

Book your consultation or call the clinic to arrange a convenient time.