Profhilo vs Polynucleotides: Which Skin Booster Fits Which Patient?

The short answer

Profhilo and polynucleotides are both injectable skin boosters, but they work through fundamentally different mechanisms and address different aspects of skin aging. They are not interchangeable, and neither is universally "better."

• Profhilo uses high-concentration hybrid hyaluronic acid to deeply hydrate, stimulate modest collagen production, and improve skin firmness through a bioremodelling effect. It spreads evenly under the skin via the BAP (Bio Aesthetic Points) injection technique, producing a gradual "glow from within" without adding volume. Evidence base: moderate, with published clinical trials and a growing body of real-world data.

• Polynucleotides use highly purified DNA fragments (typically derived from fish sources) to signal fibroblasts to produce new collagen and elastin, modulate inflammation, and support tissue repair. They work through cellular signaling rather than mechanical hydration. Evidence base: emerging — supported by smaller clinical studies and a 2024 systematic review, but lacking large-scale, long-term randomized controlled trials.

The practical distinction: Profhilo is the right choice when the primary concern is dehydration, dullness, and early skin laxity. Polynucleotides are the right choice when the primary concern is skin damage, inflammation, loss of dermal density, or the need for regenerative repair. Many patients benefit from both, sequenced appropriately.

How each one works

Profhilo: hyaluronic acid bioremodelling

Profhilo (IBSA Farmaceutici Italia) contains one of the highest concentrations of hyaluronic acid available in an injectable skin booster: 64 mg of HA in 2 mL (32 mg high-molecular-weight HA + 32 mg low-molecular-weight HA). It is manufactured using NAHYCO technology, which creates thermally stabilized hybrid cooperative complexes without chemical cross-linkers like BDDE.

When injected into the superficial subcutaneous layer via the BAP technique (5 injection points per side of the face), the HA spreads evenly across the treated area rather than staying localized as a bolus. It then:

1. Attracts and binds water, providing deep tissue hydration
2. Stimulates collagen and elastin production through mechanical stretch signaling on fibroblasts
3. Gradually degrades over 4–8 weeks as endogenous hyaluronidases break down the HA

The result is not a filling effect. Profhilo does not add volume or change facial contours. It improves skin quality — hydration, firmness, elasticity, and texture.

A clinical trial registered on ClinicalTrials.gov (NCT04002856) evaluated Profhilo for neck rejuvenation and found significant improvements in skin roughness and laxity scores at 4 months. A 2024 pilot study published in PMC evaluating Profhilo Structura (a higher-concentration formulation at 45 mg/mL) for lateral cheek fat compartment restoration found statistically significant improvements in facial volume loss and wrinkle severity, with 92% of subjects experiencing no adverse events.

Polynucleotides: regenerative DNA fragments

Polynucleotides (PNs) are long-chain DNA fragments, typically derived from highly purified salmon DNA. The most studied commercial brand is Rejuran (PharmaResearch, South Korea). They work through several mechanisms:

1. Fibroblast stimulation. PNs provide nucleotides required for cellular repair and proliferation, encouraging fibroblast activity and new collagen production.
2. Extracellular matrix remodeling. By stimulating structural protein synthesis, PNs improve dermal density and elasticity over weeks to months.
3. Anti-inflammatory effects. PNs modulate inflammatory pathways, making them particularly relevant for compromised or inflamed skin (rosacea, post-procedure recovery).
4. Hydrophilic scaffold. Their molecular structure attracts water, improving tissue hydration — though less dramatically than pure HA products like Profhilo.

A 2024 review published in the Journal of Cosmetic Dermatology found that polynucleotide injections showed promising outcomes in reducing wrinkles, improving skin texture, and enhancing elasticity. A 2026 expert perspective article in Clinical, Cosmetic and Investigational Dermatology by Rho et al. highlighted clinical applications across four indications: skin hydration and rejuvenation, structural support through deep-plane injections, barrier repair in rosacea and eczema, and scar improvement.

However, the evidence base has limitations. A systematic review in PMC noted that most studies are observational or have small sample sizes, and high-quality randomized controlled trials comparing PNs to established alternatives are still needed.

Head-to-head comparison

When Profhilo is the better choice

• Dehydrated or crepey skin. If the skin feels dry, looks dull, or has a crepe-paper texture, Profhilo's hyaluronic acid provides rapid and visible hydration improvement.
• Early skin laxity without significant damage. Patients in their 30s–40s with mild sagging but intact skin quality respond well to the bioremodelling effect.
• Pre-event glow. Profhilo's hydration effect is visible within 2–3 weeks, making it suitable before significant events if timed correctly.
• Simplicity. Two sessions with 5 injection points each is a simpler protocol than polynucleotides' multi-point approach.
• Patients who want established brand evidence. Profhilo has been on the market since 2015 and has a larger body of published clinical data.

When polynucleotides are the better choice

• Photoaged or environmentally damaged skin. PNs' regenerative mechanism addresses cellular damage that hydration alone cannot fix.
• Inflammatory skin conditions. The anti-inflammatory properties make PNs relevant for rosacea-prone skin and post-procedure recovery.
• Acne scarring and textural irregularities. The tissue remodeling effect can improve atrophic scarring when used as part of a broader treatment plan.
• Patients who want longer-lasting change. PNs' collagen-stimulating effects may last longer than Profhilo's hydration-based improvement because the mechanism (new collagen) is structurally more durable than water-binding.
• Patients who have already tried HA-based skin boosters and want more. PNs offer a different mechanism that may provide incremental improvement for patients who have plateaued on HA products.

Can they be combined?

Yes. Because they work through different mechanisms, combining Profhilo and polynucleotides is increasingly common in clinical practice. A common sequencing approach:

1. Start with Profhilo (2 sessions, 4 weeks apart) to establish hydration and baseline improvement
2. Follow with polynucleotides (3 sessions, 2–4 weeks apart) to add regenerative depth
3. Maintain with alternating treatments every 6–12 months

A 2023 review in Aesthetic Plastic Surgery suggested that combined polynucleotide plus PRP protocols may outperform either alone for skin quality indications.

The combined approach is more expensive and requires more sessions. It is not necessary for every patient — it is most relevant for those with significant skin quality concerns who have not responded adequately to a single modality.

Regulatory reality

Neither Profhilo nor polynucleotides are FDA-approved as drugs or devices in the United States. This means:

• They are not subject to FDA's drug approval process and cannot be marketed with FDA-validated efficacy claims in the US
• Off-label use is legal when performed by a licensed provider exercising clinical judgment
• Some US providers import these products under specific regulatory pathways; patients should ask about the product's provenance
• The evidence base, while growing, does not meet the standard of FDA pivotal trials

Patients should be aware that the availability and regulatory status of these products varies significantly by country. What is standard in the UK or South Korea may be difficult to access or uninsured in the US.

What to ask before choosing

1. What is the primary concern — hydration or regeneration? This is the key question. If dehydration is the problem, Profhilo. If damage and loss of density are the problem, polynucleotides.
2. Is the product available and legally sourced in my country? Ask the provider directly.
3. How many sessions does the recommended protocol include, and what is the total cost? Profhilo is typically 2 sessions; polynucleotides are typically 3–4. The cost difference adds up.
4. What results should I expect, and how long will they last? Neither product produces permanent results. Maintenance is required.
5. Can I see before-and-after photos from your practice? Not manufacturer photos — the provider's own results.

Sources

• Sparavigna A, et al. A Systematic Review of the Efficacy and Safety of Profhilo and Profhilo Body. Plast Aesthet Nurs. 2026;46(2):80. https://pmc.ncbi.nlm.nih.gov/articles/PMC13038071
• Stolina M, et al. Efficacy and tolerability of Profhilo Structura: An observational pilot study. PMC. 2024. https://pmc.ncbi.nlm.nih.gov/articles/PMC10801275
• Rho NK, et al. Expert Perspectives: Evidence-Based Applications of Polynucleotides (PNs) in Aesthetic Medicine and Dermatology. Clin Cosmet Investig Dermatol. 2026;19. https://pmc.ncbi.nlm.nih.gov/articles/PMC13047770
• Polynucleotides in Aesthetic Medicine: A Review of Current Practices and Perceived Effectiveness. PMC. 2024. https://pmc.ncbi.nlm.nih.gov/articles/PMC11311621
• ClinicalTrials.gov. NCT04002856: Aesthetic Performance of Profhilo Injective Treatment for the Neck. https://clinicaltrials.gov/study/NCT04002856
• ClinicalTrials.gov. NCT07151859: Clinical Investigation on a Polynucleotide-based Device Used to Improve Skin Hydration. https://clinicaltrials.gov/study/NCT07151859
• Yi KH, et al. A Review on Skin Boosters. Korean Assoc Laser Dermatol Trichology. 2023;4:6.
• Skin boosters — The upcoming boom in cosmetic dermatology for healthy skin. Cosmoderma. https://cosmoderma.org/skin-boosters-the-upcoming-boom-in-cosmetic-dermatology-for-healthy-skin