Polynucleotide Skin Boosters vs HA Boosters: A Seasonal Skin Plan

What is a polynucleotide skin booster?

A polynucleotide skin booster is an injectable that places highly purified salmon or trout DNA fragments into the dermis to support repair, elasticity and hydration. It belongs to the wider skin booster family, which aims to improve skin quality without changing facial shape, unlike filler or muscle-relaxing injections.

“Skin booster” is a marketing term more than a scientific one, and the published literature still uses it loosely. In practice it describes any injectable spread through the skin in small amounts to make the skin itself look healthier: more hydrated, more elastic, smoother and more even. The main families are polynucleotides, hyaluronic acid boosters (including bio-remodelling HA complexes), amino acid and HA blends, and hybrid products that combine polynucleotides with HA or peptides.

Polynucleotides stand slightly apart from the rest. A 2024 review in the International Journal of Molecular Sciences describes them as long-chain molecules from chum salmon or trout gonads that form a scaffold-like structure in tissue and are more resistant to breakdown, while the related PDRN used in wound healing acts through the adenosine A2A receptor to calm inflammation and support repair. That is why clinicians often describe polynucleotides as a repair treatment and HA boosters as a hydration treatment. For a deeper look at polynucleotides on their own, read our complete polynucleotide treatment guide.

Polynucleotides vs hyaluronic acid skin boosters: what is the difference?

Polynucleotides mainly support repair, elasticity and calmer skin, and their effect builds over 2 to 3 months. HA boosters mainly attract and hold water for hydration and glow, which often shows sooner. In a randomised split-face trial, overall appearance was similar, but polynucleotides improved elasticity, hydration and roughness more.

The best head-to-head evidence comes from a randomised, double-blind, split-face trial by Lee and colleagues in the Journal of Dermatological Treatment. Twenty-seven people had three injections two weeks apart around the eyes, with polynucleotides on one side and non-crosslinked hyaluronic acid on the other. Visual scores and global aesthetic improvement did not differ significantly between sides, but the polynucleotide side showed higher improvement in elasticity, hydration, surface roughness and pore volume, and neither side had serious adverse events.

The practical message is that neither is simply “better”. If you want a fresher, more dewy look quickly, hydration is the priority. If your skin looks thin, papery, reactive or weathered, repair is the priority, and hydration can follow. Many people need a bit of both, which is where a planned routine helps.

What does the evidence show for each type of skin booster?

Both have encouraging but imperfect evidence. A 2023 systematic review of 13 studies found injectable HA improved hydration, firmness, radiance and elasticity. A 2025 systematic review of polynucleotides covering 219 patients reported benefits for wrinkles and texture with no severe adverse events. Both reviews called for larger randomised trials.

Clinicians’ experience adds context, though it is not the same as trial evidence. In a survey of 557 cosmetic physicians in South Korea published in Skin Research and Technology, most who used polynucleotides for facial redness rated them effective, and large majorities agreed that polynucleotides support wound healing, the skin barrier and hydration. That aligns with how polynucleotides are often used in practice: to calm and repair skin, including after lasers or microneedling.

Which should you choose: polynucleotides, an HA booster or both?

Match the booster to the main problem. Polynucleotides suit thin, crepey, sun-damaged, reactive or under-eye skin. HA boosters suit dehydrated, dull skin that needs a quicker lift in radiance. Both make sense when skin is thin and dry, or after a summer of sun, travel and air conditioning.

The under-eye is the clearest example. A 2026 review in the Journal of Clinical Medicine concluded that hyaluronic acid and polynucleotides are complementary, with polynucleotides particularly suited to thin, delicate or swelling-prone tissue. Heavier HA products placed under the eye can cause problems such as a bluish Tyndall effect or swelling in some patients, which is one reason many practitioners favour polynucleotide-based boosters there. For broader options, see our guide to the best skin booster treatment in Knightsbridge.

How to build a seasonal skin-quality routine

A simple year-round plan is: autumn, a polynucleotide course to repair summer sun damage; winter, an HA booster for hydration against heating and cold; spring, a maintenance session before UV rises; summer, protection and minimal injectables. NHS guidance notes UK UV is strongest from March to October.

Skin does not age evenly through the year. Summer brings UV exposure, and a study of 298 women in Clinical, Cosmetic and Investigational Dermatology linked UV to about 80% of visible facial ageing signs. Winter brings cold wind outdoors and dry, heated air indoors, which many people notice as tightness and dullness. A seasonal routine simply schedules the right kind of support at the right time, and it spreads cost across the year.

1. September: assessment

   Review what summer has done: dryness, new pigmentation, crepiness or redness. Take baseline photographs and agree priorities for the year.

2. Autumn: repair course

   Start polynucleotides to support repair and elasticity, focusing on the areas that took the most sun: face, neck, décolleté and hands.

3. Winter: hydrate

   About two to four weeks after the last polynucleotide session, add an HA booster for hydration and glow through the coldest months.

4. Spring: maintain

   A single top-up of the booster that worked best for you, timed before longer days and stronger UV.

5. Summer: protect and review

   Keep treatments light, protect your skin, then review photographs in September and adjust the plan.

Can polynucleotides and HA boosters be combined, and in what order?

Yes, and there is a rationale for polynucleotides first. In a split-face study of 20 women, skin primed with polynucleotides before crosslinked HA showed higher measured HA levels at 3 and 6 months than the saline-primed side. Different injectables are usually spaced about two weeks apart, or combined in a single hybrid product.

The study by Araco and colleagues in the Journal of Cosmetic Dermatology was designed to test exactly this idea. Twenty women with moderate to severe nasolabial folds received polynucleotides on one side of the face and saline on the other as a “priming” phase, followed by crosslinked hyaluronic acid on both sides after three and six weeks. Polynucleotides alone improved wrinkles and texture at six weeks, and the primed side had significantly higher HA levels on 3D imaging at three and six months, with no clinically significant adverse events. It is a small study using filler rather than a booster, but it supports the sequence many practitioners already use: repair, then hydrate.

• Sequential plan: complete a polynucleotide course, then start an HA booster two to four weeks later. This makes it easier to see what each product has done.
• Alternating plan: for maintenance, alternate a polynucleotide session and an HA session every few months.
• Hybrid products: some boosters combine polynucleotides with hyaluronic acid or peptides in one syringe, which can suit people who want fewer appointments. Levirgo’s booster menu includes polynucleotide-based options for the eye area and face.
• With other treatments: boosters pair well with anti-wrinkle treatment, filler or energy-based tightening. Spacing of about two weeks is common so swelling settles between treatments.

What happens at a skin booster appointment, and what is recovery like?

After an assessment, numbing cream is applied and the booster is placed with a fine needle or cannula as tiny deposits across the area. Appointments take about 30 to 45 minutes. Expect small bumps for hours to a day, possible bruising for up to a week, and a return to normal activities the same day.

Polynucleotide and HA boosters are given in similar ways. Your practitioner cleans the skin, marks the treatment area if needed, and places small amounts of product in the superficial dermis. HA bio-remodelling products are often placed at a small number of set points on each side of the face; in the study by Sparavigna and Tenconi, five points per side were used, two sessions four weeks apart. Polynucleotides are more often placed as a grid of tiny blebs or fanned with a cannula.

Are polynucleotide and hyaluronic acid skin boosters safe?

Both have favourable safety records when a medically trained practitioner uses a regulated product. Reported side effects are mostly redness, swelling, bumps and bruising that settle within days. Rare risks include infection and allergic reaction. Avoid treatment in pregnancy or breastfeeding, and discuss a fish allergy before polynucleotides.

For polynucleotides, the 2025 Lampridou systematic review found localised pain, swelling, itching, redness and bruising that generally resolved within a week, and no severe adverse events. For HA boosters, post-marketing surveillance of one bio-remodelling HA product published in 2025 recorded 371 adverse events against an estimated 1,091,956 facial treatments, a rate of 0.034%, most commonly swelling, redness and discomfort. Surveillance data depend on events being reported, so the true rate may be higher, but the pattern is reassuring.

Regulation matters too. The CQC states that it does not regulate injections used to alter appearance, such as dermal fillers, so you need to check the individual practitioner. The NHS advises choosing someone with the right training, skills and insurance, checking their professional register, and meeting them before you commit.

How much does a seasonal skin booster plan cost in London?

In London a polynucleotide session typically costs £250 to £400 and an HA booster session £200 to £400. A year combining a polynucleotide course, an HA booster course and maintenance usually totals about £1,350 to £2,600. These are indicative ranges confirmed after assessment.

Not everyone needs the full plan. Many people do well with a polynucleotide course in autumn and one maintenance session in spring. Others with good skin thickness only need an HA booster before winter. Our guide to the cost of non-invasive facial rejuvenation in London shows how boosters fit alongside other treatments in a yearly budget.

How to choose a clinic for polynucleotide and skin booster treatment

Choose a clinic that offers more than one type of booster, so advice is not tied to a single product, where a registered healthcare professional assesses you face to face and injects. Check the GMC, NMC or a PSA-accredited register such as the JCCP, and ask for an itemised written plan.

1. Who will treat me, and where are they registered? Doctors are on the GMC register and nurses on the NMC register; the NHS also lists the JCCP and Save Face as accredited registers for non-surgical practitioners.
2. Which booster do you recommend, and why that one for my skin? A clinic offering several options can explain why it prefers polynucleotides, HA or a combination.
3. How many sessions, how far apart, and what does maintenance cost?
4. Is the product traceable and regulated? Ask to see the packaging and batch details.
5. What are the common side effects, and who do I contact if I am worried?

Be cautious about clinics that promise dramatic before-and-after changes from boosters, push large prepaid packages on the day, or cannot explain the difference between the products they sell. In August 2025 the government announced plans for a national licensing scheme for non-surgical cosmetic procedures in England, but until it is in force, these checks are your best protection.

Polynucleotide and skin booster treatment at Levirgo in Knightsbridge

Levirgo Aesthetics Clinic is a doctor-led clinic at 6 Beauchamp Place, Knightsbridge SW3 1NG, a short walk from Harrods and a few minutes from Knightsbridge station on the Piccadilly line. We offer polynucleotides and several skin booster types, so one assessment can plan your routine for the whole year.

Our skin booster menu includes polynucleotide-based boosters for the eye area and face, amino acid and hyaluronic acid boosters, and exosome therapy, alongside our dedicated polynucleotide treatments for the eye area, full face, neck, décolleté and hands. Your consultation looks at how your skin behaves through the year, not just how it looks today, and ends with a written plan you can pace to suit your diary and budget.

We see patients from South Kensington, Chelsea, Mayfair and Belgravia, and many combine appointments with work or shopping nearby. When you are ready, book a consultation or get in touch with a question first. More guides are in our skin treatments journal.