What Do Polynucleotides Do for Skin? 7 Powerful Ways

What do polynucleotides do for skin? They help improve hydration, repair, firmness, elasticity and overall skin quality in a natural-looking way.

TL;DR: Polynucleotides are regenerative injectable treatments that support healthier skin from within. They do not freeze muscles like anti-wrinkle injections. They also do not simply add volume like dermal fillers. Instead, they help create a better environment for skin repair, collagen activity and hydration.

At Riverbanks Clinic, we use polynucleotides for patients who want fresher, stronger and more resilient skin. They are especially useful for tired, crepey, thin or stressed skin. They can also help the under-eye area, face, neck and areas affected by poor texture.

Patients often ask for filler when what they really need is better skin quality. Therefore, careful assessment matters. Polynucleotides can improve the condition of the skin itself, while preserving natural facial movement and expression.

What are polynucleotides?

Polynucleotides are purified DNA fragments, usually derived from salmon or trout DNA. They act as biostimulators, which means they encourage repair processes within the skin.

Once injected, polynucleotides help support the skin’s repair environment. They attract water, support fibroblast activity and encourage healthier tissue function. Fibroblasts are important because they help produce collagen, elastin and other structural components of healthy skin.

As a result, polynucleotides may help the skin look:

• More hydrated
• Smoother in texture
• Firmer
• Less crepey
• Calmer
• More resilient
• Fresher under the eyes

However, the results develop gradually. Polynucleotides are not an instant “wow” treatment. Instead, they suit patients who want steady, natural-looking improvement.

How do polynucleotides work?

Polynucleotides work by supporting the environment in which skin cells repair, communicate and renew. In simple terms, they help tired skin recover better.

This matters because skin ageing rarely has one cause. Instead, several changes usually happen together. These include reduced collagen, slower repair, dehydration, oxidative stress, inflammation, sun damage and hormonal change.

Therefore, polynucleotides are best understood as skin quality treatments. They do not change facial shape. Instead, they aim to improve the skin sitting over your facial structure.

1. Polynucleotides improve deep skin hydration

One of the most noticeable benefits is hydration. Polynucleotides bind water within the skin, which can make the skin look fresher and less dull.

This can help if your skin looks tired even when you sleep well. It may also help if your skin feels dry, rough or crepey.

However, this is different from applying moisturiser. Topical skincare supports the surface barrier. Polynucleotide injections work within the skin, so the hydration effect can feel deeper and more sustained.

Many patients describe their skin as looking more rested. That is exactly the type of subtle improvement we aim for at Riverbanks Clinic.

2. Polynucleotides support collagen activity

Collagen gives skin its structure and firmness. However, collagen production slows with age. Sun exposure, stress, smoking, menopause and weight loss can also accelerate collagen loss.

Polynucleotides support fibroblast activity. As a result, they may improve the skin’s ability to renew and repair over time.

This does not mean they give the same lift as surgery. They also do not create the same volume as dermal fillers. Nevertheless, they can improve the quality of ageing skin in a gentle and progressive way.

That distinction matters. If the issue is hollowing, a treatment such as Sculptra or dermal filler may be more appropriate. However, if the issue is thin, tired or poor-quality skin, polynucleotides may be a better starting point.

3. Polynucleotides improve firmness and elasticity

Skin can start to feel weaker as collagen and elastin decline. This often appears as fine crinkles, mild laxity or a crepey texture.

Polynucleotides can help support firmer, more elastic skin over time. They do this by improving the skin’s regenerative environment rather than stretching or filling tissue.

Therefore, the result should look natural. You should still look like yourself, only fresher and healthier.

At Riverbanks Clinic, this fits our Invisible Aesthetics approach. We want people to notice that you look well, not that you have had treatment.

4. Polynucleotides smooth crepey skin texture

Skin texture changes when collagen declines, pores become more visible and the skin surface becomes less even. This can make make-up sit badly. It can also make the skin look older than you feel.

Polynucleotides may help the skin feel smoother over time. They are often useful for patients who say:

• “My skin looks tired.”
• “My make-up does not sit well anymore.”
• “My skin looks crepey.”
• “I want better skin, but I do not want filler.”
• “I look older than I feel.”

Because the improvement is gradual, it rarely looks obvious. Instead, patients usually notice better skin quality over several weeks.

5. Polynucleotides refresh tired under-eyes

The under-eye area is one of the most common reasons patients ask about polynucleotides.

This area is difficult to treat because the skin is thin. In some patients, under-eye filler can cause puffiness, swelling or a bluish appearance. Therefore, filler is not always the right choice.

Polynucleotides can be useful when the concern is:

• Crepey under-eye skin
• Fine lines
• Thin skin
• Mild dark circles
• Tired-looking eyes
• Poor skin quality under the eyes

However, they will not fully correct deep hollows, large eye bags or significant pigmentation. Therefore, assessment is essential.

At Riverbanks Clinic, we first decide whether the issue is skin quality, volume loss, pigmentation, puffiness or a combination. This helps us choose the safest and most effective treatment plan.

6. Polynucleotides support repair after stress, ageing or inflammation

Inflammation plays a role in many skin concerns. It can contribute to redness, sensitivity, slower healing and accelerated ageing.

Polynucleotides appear to support tissue repair. They may also help create a calmer skin environment. Consequently, they can be useful in wider regenerative skin plans.

However, they are not a cure for rosacea, acne or inflammatory skin disease. If redness, acne or pigmentation is the main concern, we may recommend other treatments first.

For example, VBeam laser may be more suitable for redness and visible vessels. Likewise, Cool Laser may be better for resurfacing, texture and sun damage.

The best result often comes from choosing the right tool for the right problem.

7. Polynucleotides improve radiance without adding volume

This is one of the main reasons patients like polynucleotides. They improve skin quality without changing facial shape.

Dermal fillers can restore volume, contour and support. Polynucleotides, by contrast, improve the condition of the skin itself.

So, if you want sharper cheeks or correction of hollowing, filler may still be better. However, if your skin looks tired, crepey or dehydrated, polynucleotides may be more suitable.

In many cases, we combine treatments carefully. For example:

• Polynucleotides for skin quality
• Profhilo for hydration and tissue remodelling
• VBeam for redness caused by vascular tissues
• Cool Laser for resurfacing and smoother texture
• Secret RF for deeper collagen support
• Sculptra for more potent collagen stimulation, volume and lifting
• Dermal filler for structural volume support

This layered approach often looks more natural than relying on one treatment alone.

Polynucleotides vs Profhilo: what is the difference?

Patients often compare polynucleotides with Profhilo because both treatments improve skin quality.

Profhilo is a hyaluronic acid-based injectable treatment. It is excellent for hydration and tissue remodelling. Polynucleotides, however, are DNA-derived regenerative treatments that focus more on repair, resilience and skin quality.

A simple way to understand the difference is this:

• Profhilo improves hydration and skin laxity.
• Polynucleotides support repair, resilience and skin quality.
• Fillers restore shape and volume.
• Sculptra stimulates deeper collagen over time.
• Anti-wrinkle injections relax muscle movement.

Therefore, the best choice depends on your skin, age, anatomy and goals.

Where can polynucleotides be used?

Polynucleotides can be used in several areas, including:

• Under eyes
• Face
• Neck
• Décolletage
• Hands
• Cheeks
• Around the mouth
• Areas of poor texture
• Selected acne scar areas

At Riverbanks Clinic, we commonly use them when skin quality is the main concern rather than facial volume.

How many polynucleotide treatments do you need?

Most patients need a course of three treatments. These are usually spaced two to four weeks apart.

After that, maintenance may be recommended every six months. However, this depends on your skin quality, age, lifestyle and treatment goals.

Some patients notice early hydration within a few weeks. However, collagen and skin quality changes take longer. Therefore, the best results usually appear gradually over several months.

Is there downtime after polynucleotides?

Downtime is usually mild. However, because polynucleotides are injected, small bumps, redness, tenderness or bruising can happen.

Most patients return to normal daily activity quickly. Nevertheless, we usually advise avoiding heavy exercise, alcohol, saunas, steam rooms and strong active skincare for 24 to 48 hours.

You should also avoid touching or massaging the treated area unless your clinician advises otherwise.

Are polynucleotides safe?

Polynucleotides are generally well tolerated when used correctly. However, safety depends on assessment, product choice, injection technique and medical supervision.

This is especially important around the eyes, where the anatomy is delicate.

Possible side effects include:

• Redness
• Swelling
• Small bumps
• Bruising
• Tenderness
• Itching
• Temporary unevenness
• Rare allergic-type reactions
• Rare infection

At Riverbanks Clinic, treatment takes place within a doctor-led clinical environment. We review your medical history, skin condition and suitability before treatment.

What does the research say?

The evidence for polynucleotides is growing. However, more large comparative studies are still needed.

A 2024 clinical study looked at intradermal PN HPT treatment for skin rejuvenation. The authors reported improvements in skin surface, firmness, pigmentation and radiance, with benefits persisting up to six months in the study group.

A 2024 review in the Journal of Cosmetic Dermatology reported promising outcomes for wrinkles, texture and elasticity. However, it also highlighted the need for stronger clinical evidence.

Research on polydeoxyribonucleotide also supports its role in wound healing, fibroblast activity and angiogenesis. This helps explain why polynucleotide-based treatments are discussed in regenerative skin medicine.

• Lim TS et al. Polynucleotides HPT for Asian Skin Regeneration and Rejuvenation. Clinical, Cosmetic and Investigational Dermatology. 2024.
• Lampridou S et al. The Effectiveness of Polynucleotides in Esthetic Medicine. Journal of Cosmetic Dermatology. 2024.
• Galeano M et al. Polydeoxyribonucleotide stimulates angiogenesis and wound healing. Wound Repair and Regeneration. 2008.

Who is a good candidate for polynucleotides?

You may be suitable for polynucleotides if you have:

• Tired-looking skin
• Crepey texture
• Fine lines
• Under-eye thinning
• Dehydrated skin
• Poor skin elasticity
• Mild acne scarring
• Dullness
• Early skin ageing
• Skin that needs repair after stress or sun exposure

However, you may need a different treatment if your main concern is deep volume loss, heavy jowling, significant pigmentation or advanced skin laxity.

Why choose Riverbanks Clinic?

Riverbanks Clinic is a doctor-led medical aesthetics centre serving Harpenden, St Albans and Luton.

We focus on evidence-based, natural-looking results. We also use polynucleotides as part of a wider regenerative skin strategy, not as a one-size-fits-all trend.

That matters because good skin treatment starts with diagnosis. We look at skin quality, facial structure, redness, pigmentation, lifestyle, ageing pattern and previous treatments before making a plan.

“The aim is not to make someone look treated. The aim is to help their skin look healthier, stronger and more rested.”

Frequently asked questions about polynucleotides

Do polynucleotides work immediately?

No, not fully. Some patients notice early hydration. However, repair and skin quality changes build gradually over several weeks.

Are polynucleotides better than filler?

They are not better or worse. They do a different job. Filler restores volume and shape. Polynucleotides improve skin quality.

Can polynucleotides help under-eye dark circles?

They may help if dark circles relate to thin or poor-quality skin. However, pigmentation, hollowness and eye bags may need different treatments.

How long do polynucleotide results last?

Results vary. Many patients choose maintenance around every six months after their initial course.

Can polynucleotides be combined with other treatments?

Yes, often. We may combine them with Profhilo, Cool Laser, VBeam, Secret RF, Sculptra or medical skincare, depending on your skin.

Summary: what do polynucleotides do for skin?

Polynucleotides help improve skin quality by supporting hydration, repair, collagen activity, firmness, texture and resilience. They are especially useful for patients who want fresher skin without adding volume or changing facial expression.

However, the right treatment depends on your skin and your goals. Therefore, a proper consultation is the best starting point.

To explore polynucleotide treatment at Riverbanks Clinic in Harpenden, book a consultation online, call 01582 762877, or download the Riverbanks app.

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