TL;DR
Medically reviewed by Dr. Elena Vasquez, MBBS, MRCS, MSc Aesthetic Medicine | Last updated: February 2026 The world of injectable skin boosters has expanded dramatically in recent years, offering patients…
Last updated: 5 March 2026
The world of injectable skin boosters has expanded dramatically in recent years, offering patients increasingly sophisticated options for deep skin hydration and rejuvenation. Two of the most talked-about categories are polynucleotide (PN) treatments and hyaluronic acid (HA) skin boosters. But what exactly sets them apart, and which might be right for you? In this evidence-based guide, we break down the science, benefits, and considerations for each.
What Are Skin Boosters?
Skin boosters are injectable treatments designed to improve skin quality from within. Unlike volumising dermal fillers, skin boosters focus on hydration, texture, and overall skin health. They are typically injected into the superficial dermis using micro-injection techniques, delivering active ingredients exactly where they are needed most.
The skin booster market has evolved from simple HA micro-injections to a diverse category that now includes polynucleotides, growth factors, amino acid complexes, and hybrid formulations. This guide focuses on the two most popular and well-researched categories: polynucleotides and hyaluronic acid boosters.
Hyaluronic Acid Skin Boosters: The Established Standard
Hyaluronic acid skin boosters have been available for over a decade, with products like Restylane Skinboosters (Vital and Vital Light) leading the market. More recent entrants include Profhilo, Juvederm Volite, and Teosyal Redensity 1.
How HA Boosters Work
Hyaluronic acid is a naturally occurring glycosaminoglycan that can hold up to 1,000 times its weight in water. When injected into the dermis, HA boosters:
- Provide immediate deep hydration by attracting and binding water molecules
- Stimulate fibroblast activity, promoting collagen synthesis
- Improve skin elasticity and firmness over time
- Create a more luminous, dewy complexion
A systematic review by Niforos et al. (2023) found that HA skin boosters produced statistically significant improvements in skin hydration, elasticity, and roughness across 18 randomised controlled trials.
Popular HA Skin Boosters
- Profhilo — 64mg hybrid cooperative complex, bio-remodelling action, 5 BAP injection points per side
- Restylane Skinboosters — Stabilised HA, micro-injection technique, three-session protocol
- Juvederm Volite — Cross-linked HA for longer-lasting hydration, single-session option
- Teosyal Redensity 1 — HA combined with amino acids, antioxidants, vitamins, and minerals
Polynucleotide Skin Boosters: The New Frontier
Polynucleotide (PN) treatments represent the newest wave of skin boosters, with products such as Nucleofill, Ameela, Plinest, and Vitaran gaining significant traction across Europe and the UK since 2023.
How Polynucleotides Work
Polynucleotides are biopolymers derived from purified DNA fragments, typically sourced from salmon or trout sperm DNA (don’t worry — the final product is highly purified and biocompatible). Their mechanism of action is distinct from HA:
- Tissue regeneration — PNs activate cellular repair mechanisms by binding to purinergic receptors on fibroblasts (Galeano et al., 2022)
- Anti-inflammatory effects — PNs act as free radical scavengers, reducing oxidative stress and inflammation
- Collagen stimulation — Enhanced fibroblast proliferation leads to increased collagen and extracellular matrix production
- Wound healing — PNs have a documented history in regenerative medicine for promoting tissue repair
“Polynucleotides represent a genuinely different mechanism of skin rejuvenation compared to hyaluronic acid. Where HA primarily hydrates and provides mechanical support, polynucleotides work at a cellular level to enhance the skin’s regenerative capacity.” — Dr. Elena Vasquez, Clinical Director, Axiom Aesthetics
Clinical Evidence for Polynucleotides
A pivotal study by Cavallini et al. (2023) in the Journal of Cosmetic Dermatology demonstrated that polynucleotide injections produced significant improvements in skin elasticity (+23%), hydration (+31%), and overall skin quality scores in a 90-day follow-up of 120 patients. Another study by Herreros et al. (2024) showed improvements in periorbital dark circles and under-eye skin quality — an area where HA fillers carry higher complication risks.
Head-to-Head Comparison
Mechanism of Action
HA Boosters: Primarily hydrate through water-binding capacity; secondary collagen stimulation via mechanical and biochemical signalling. Immediate hydration effect.
Polynucleotides: Primarily regenerate through cellular activation; stimulate fibroblast proliferation and tissue repair pathways. Results build gradually over weeks.
Treatment Protocol
HA Boosters: Varies by product — Profhilo requires 2 sessions (4 weeks apart); Skinboosters typically 3 sessions (2-4 weeks apart); maintenance every 4-6 months.
Polynucleotides: Typically 3-4 sessions spaced 2-3 weeks apart; maintenance every 4-6 months.
Best For
HA Boosters: Dehydrated skin, loss of radiance, fine lines, skin that needs immediate hydration boost. All skin types and ages from late twenties.
Polynucleotides: Damaged or ageing skin needing cellular-level repair, under-eye rejuvenation, acne scarring, post-inflammatory changes, sensitive skin that may not tolerate HA well.
Safety Profile
Both categories have excellent safety profiles. HA boosters have a longer track record (15+ years) with well-documented side effects (mild swelling, bruising). Polynucleotides are newer but have shown very low complication rates in published studies, with their purified DNA origin making allergic reactions extremely rare (Kim et al., 2023).
Can You Combine PN and HA Boosters?
Yes, and this is increasingly popular. Many practitioners are now offering combination protocols — for example, Profhilo for its bio-remodelling and deep hydration effects, followed by polynucleotides for cellular regeneration. The treatments target different pathways and can produce synergistic results. At Axiom Aesthetics, we design bespoke treatment plans that may incorporate both approaches based on your individual skin analysis.
Making Your Choice
The best skin booster for you depends on your specific concerns, skin condition, and goals. During a consultation at Axiom Aesthetics, our practitioners will assess your skin using clinical evaluation and may recommend one or both approaches as part of a personalised treatment plan.
Frequently Asked Questions
Are polynucleotide injections safe?
Yes. Polynucleotide products used in aesthetic medicine are highly purified and biocompatible. Clinical studies have shown very low rates of adverse events, primarily limited to mild injection-site reactions such as temporary swelling or bruising. They have been used in regenerative medicine for over two decades.
Which is better for under-eye rejuvenation — PN or HA?
Polynucleotides are increasingly preferred for the under-eye area due to their tissue-regenerating properties and lower risk of complications such as Tyndall effect (bluish discolouration) that can occur with HA products. However, both can be effective when administered by an experienced practitioner.
How many sessions of skin boosters do I need?
This depends on the product chosen and your individual needs. Profhilo typically requires 2 sessions, HA Skinboosters usually 3 sessions, and polynucleotides typically 3-4 sessions. Your practitioner will create a tailored protocol during your consultation.
Can skin boosters replace dermal fillers?
No — they serve different purposes. Skin boosters improve overall skin quality, hydration, and texture. Dermal fillers restore or add volume to specific areas. Many patients benefit from both as part of a comprehensive treatment plan.
References
- Niforos, F., et al. (2023). “Hyaluronic acid skin boosters: a systematic review of clinical outcomes.” Dermatologic Surgery, 49(1), 45-58.
- Cavallini, M., et al. (2023). “Polynucleotide-based skin boosters: efficacy and safety in a prospective study.” Journal of Cosmetic Dermatology, 22(4), 1122-1131.
- Galeano, M., et al. (2022). “Mechanisms of polynucleotide-mediated tissue repair.” International Journal of Molecular Sciences, 23(14), 7892.
- Herreros, F., et al. (2024). “Polynucleotides for periorbital rejuvenation.” Aesthetic Plastic Surgery, 48(2), 398-407.
- Kim, J.H., et al. (2023). “Safety profile of polynucleotide injections: a meta-analysis.” Journal of Dermatological Treatment, 34(1), 2145678.
This article is for informational purposes only and does not constitute medical advice. Always consult a qualified medical professional before undergoing any aesthetic treatment. Individual results may vary.
This content is provided for informational purposes only and does not constitute medical advice. Individual results may vary. Always consult with a qualified medical professional before undergoing any treatment. All treatments carry potential risks and side effects which will be fully discussed during your consultation.
Medical Disclaimer: This content is provided for informational purposes only and does not constitute medical advice. Individual results may vary. Always consult with a qualified medical professional before undergoing any treatment. All treatments carry potential risks and side effects which will be fully discussed during your consultation.