Is PDRN a Filler?

Short answer: No, PDRN is not a filler. Fillers, usually cross-linked hyaluronic acid, add volume to reshape areas like lips, cheeks and tear troughs. PDRN and polynucleotides are skin boosters: they are injected in small amounts to improve skin quality, such as hydration, texture and fine lines, without changing shape. Results are subtler and build over several sessions.

Is PDRN a filler? It is an easy mistake to make. PDRN injections are given by the same practitioners, in the same clinics, often in the same areas as fillers. But they do a very different job. This guide explains what separates PDRN from dermal fillers, what each can and cannot do, and how risks compare. For how PDRN compares with hyaluronic acid more broadly, see PDRN vs hyaluronic acid.

Key takeaways

• PDRN and polynucleotides improve skin quality; they do not add volume[1,2].

• A 2026 review found hyaluronic acid fillers remain superior for structural correction, while polynucleotides improve skin quality parameters[2].

• An expert panel that included manufacturer staff reported no published cases of granuloma or vascular occlusion linked to polynucleotides[3]; that is not proof of zero risk.

• In England, it is illegal to inject dermal fillers into under-18s for cosmetic purposes[4].

PDRN vs dermal filler at a glance

What a filler does

A dermal filler is a gel injected to replace or add volume. Most fillers used today are hyaluronic acid that has been cross-linked to make it thicker and longer-lasting. Fillers can plump lips, restore cheek volume, smooth deep folds and reshape the jaw. Results are visible straight away. Because HA fillers can be dissolved with an enzyme called hyaluronidase, mistakes or complications can often be reversed.

Some products, such as poly-L-lactic acid or calcium hydroxylapatite, are called biostimulators. They add some volume and also stimulate collagen over time. These are different again from PDRN.

What PDRN does

PDRN and polynucleotides are injected in small amounts across an area, often as tiny blebs or with a cannula. They are thought to signal repair through A2A receptors and provide building blocks for cells[5]. Some longer-chain polynucleotides also form a water-holding scaffold that may support tissue[3]. The aim is better skin: improved hydration, elasticity, texture and fine lines. You will not see a change in shape, and you should not expect your lips or cheeks to look fuller.

What the evidence says about PDRN vs fillers

A 2026 review comparing hyaluronic acid fillers with polynucleotides for under-eye rejuvenation concluded that HA remains the gold standard for volumetric correction, while polynucleotides show consistent improvements in elasticity, hydration and fine lines with a favourable safety profile[2]. It also noted that varied study designs and products limit firm conclusions[2].

A 2025 systematic review of under-eye treatments reached a similar view: fillers remain foundational for volume loss, while polynucleotides and microneedling target texture and fine lines[6]. Systematic reviews of polynucleotides and PDRN overall report benefits for skin quality and scars, but studies are small and follow-up is short[1,7].

Practical tip: If what bothers you is hollowness or volume loss, a skin booster on its own is likely to disappoint. Be clear with your practitioner about what you want to change before choosing between a booster and a filler.

Are the risks different?

Both are medical procedures with small risks of bruising, swelling and infection. The most serious filler risk is vascular occlusion, where filler blocks a blood vessel; this can cause skin damage and, rarely, blindness. An expert panel article on polynucleotides reported no cases of granuloma or vascular occlusion in the literature to date[3]. This is reassuring, but it was written by a panel including manufacturer staff, and absence of reports is not proof of zero risk. Polynucleotides are also not reversible with hyaluronidase.

PDRN carries a specific concern for people with fish allergy[5].

UK rules for fillers and PDRN

The Botulinum Toxin and Cosmetic Fillers (Children) Act 2021 makes it an offence to inject a filler for cosmetic purposes into anyone under 18 in England[4]. The Act defines a filler as a substance for dermal or mucous membrane filling[4]. It does not name polynucleotides, and whether a particular product falls within that definition is a legal question this guide cannot settle. Reputable clinics treat only adults in any case.

How a product is regulated is also decided product by product. Some polynucleotide injectables are sold as medical devices; for example, a 2026 study describes Plinest as a CE-marked class III device[8]. Other products may be classified differently, so ask the clinic for the product name and check its marking.

On 21 October 2026 the government confirmed that Great Britain will continue to recognise CE-marked medical devices on a long-term basis[9]. Legal commentary notes that devices certified under the newer EU Medical Device Regulation are covered indefinitely, while certificates under the older EU directives are recognised only until their EU transition period ends, currently 31 December 2028[10]. New regulations are still needed to put this into law. Northern Ireland follows EU device rules directly. Device status is decided product by product, so check the box for a CE or UKCA mark and ask the clinic which product it uses.

Licensing of non-surgical cosmetic procedures in England, including injectables, is planned but not yet in force[11].

Can you have PDRN and filler together?

Yes. Many practitioners combine them: filler for volume and polynucleotides for skin quality. A 2026 study of a combined approach around the eyes, using HA filler, polynucleotides and a muscle relaxer, reported improvements in volume and lines, though changes in skin wrinkling measured by imaging were not significant[12]. Combination plans should be spaced and planned carefully. See PDRN for dark circles for under-eye options.

How to decide which you need

1. Look at the area in good light: is the problem volume, shape or skin quality?

2. If it is hollowness or volume loss, ask about filler or other volume options.

3. If it is crepey, thin, dull or textured skin, PDRN may suit you.

4. Ask the practitioner to explain what each option will and will not change.

5. Get a written plan and total cost, including how many sessions are needed.

6. Check training, insurance and the exact product being used.

For course length, see how many PDRN sessions you need.

Who should take care

• Fish allergy: avoid salmon-derived PDRN[5].

• Pregnancy or breastfeeding: avoid elective injections.

• Blood thinners: check with your GP or pharmacist first.

• Active infection or cold sores: postpone treatment.

• History of reactions to injectables: tell your practitioner.

Read are PDRN injections safe for more.

Why the confusion between PDRN and fillers?

Several things blur the line. Both are injected by the same practitioners, both are sometimes called "injectables", and some products combine polynucleotides with hyaluronic acid. Social media also tends to call anything injected into the face "filler". On top of that, the evidence for PDRN is still limited and early, so marketing sometimes fills the gap with bold claims about "lifting" that are not proven.

If you see a clinic advertising polynucleotides to "lift", "plump" or "fill", ask what they mean. PDRN can make skin look fresher and smoother, which some people describe as lifted, but it does not add volume like filler. Clear, honest descriptions are a good sign of a trustworthy clinic.

The bottom line

PDRN is not a filler. Fillers add volume and change shape immediately; PDRN and polynucleotides improve skin quality gradually without adding volume. They can work together, but they answer different problems. Be clear about what you want to change, and choose a qualified practitioner who will be honest about what each treatment can do.

FAQs

Does PDRN add volume?

No. It improves skin quality, not volume[2].

Is a polynucleotide injection a filler?

No. It is usually described as a skin booster.

Can polynucleotides replace tear trough filler?

Not for true hollows. They may help crepey skin but do not fill[2,6].

Can PDRN be dissolved like filler?

No. Hyaluronidase dissolves HA fillers, not polynucleotides.

Is PDRN safer than filler?

Serious complications appear rare in published reports[3], which come partly from manufacturer-linked authors. Any injection carries risk.

Related reading

• PDRN vs Hyaluronic Acid

• Are PDRN Injections Safe?

• PDRN for Dark Circles

References

1. The effectiveness of polynucleotides in esthetic medicine: a systematic review. J Cosmet Dermatol. 2025;24(2):e16721.

2. Khan RS, Hafeez K. Hyaluronic acid fillers versus polynucleotides for under-eye rejuvenation. J Clin Med. 2026;15(13):4971.

3. Rho NK, Chilukuri S, Chan G, et al. Expert perspectives: evidence-based applications of polynucleotides (PNs) in aesthetic medicine and dermatology. Clin Cosmet Investig Dermatol. 2026;19:557226.

4. Botulinum Toxin and Cosmetic Fillers (Children) Act 2021, section 1. legislation.gov.uk.

5. Squadrito F, Bitto A, Irrera N, et al. Pharmacological activity and clinical use of PDRN. Frontiers in Pharmacology. 2017;8:224.

6. Beer J, Boghosian T, Sherif R, et al. What's new with under eye treatment: a multispecialty systematic review of recent under eye treatments. Dermatol Surg. 2026;52(2):155–163.

7. Alhussain AM, et al. Polynucleotides and polydeoxyribonucleotides for skin rejuvenation, postoperative scar prevention, and wound healing: a systematic review of randomized clinical trials. Cureus. 2026;18(7).

8. Lanza E, Perna A, Bizzarri S, et al. A real-life assessment of injectable polynucleotides High Purification Technology in aesthetic medicine for skin rejuvenation. J Cosmet Dermatol. 2026;25(1):e70532.

9. Medicines and Healthcare products Regulatory Agency. Government confirms indefinite recognition of CE marked medical devices. GOV.UK, 21 October 2026.

10. CMS. Here to stay: government confirms long-term recognition of CE marked medical devices and IVDs in Great Britain. Legal update, October 2026.

11. Department of Health and Social Care. The licensing of non-surgical cosmetic procedures in England: consultation response. GOV.UK, 7 August 2025.

12. Frank K, Alfertshofer M, Dinh N, et al. A multimodal approach to extended periorbital rejuvenation: clinical outcomes and time course in a prospective single-centre study. Clin Cosmet Investig Dermatol. 2026;19:642570.

This article is for general information only and is not a substitute for personalised advice from a pharmacist, GP or other qualified healthcare professional. If you have a reaction or a medical concern, seek professional advice.