Are Polynucleotides Just a Passing Trend?
The aesthetics world is no stranger to trends. From snail slime serums to “glass skin,” beauty fads sweep through social feeds almost daily. But while some disappear as quickly as they arrive, others earn their place in clinics and become long-term game-changers.
So where do polynucleotide injections—often nicknamed the salmon sperm treatment—fit in? Are they another fleeting craze, or do they truly offer something new in regenerative aesthetics?
Spoiler alert: the evidence suggests they’re here to stay. Let’s explore why.
What Are Polynucleotides – and How Do They Work?
At their core, polynucleotides are purified DNA fragments that act like scaffolding for the skin. When injected, these fragments get to work by:
- Stimulating fibroblasts (the cells responsible for collagen and elastin)
- Enhancing skin hydration by binding water molecules
- Reducing oxidative stress and inflammation
- Supporting natural repair mechanisms
In short, polynucleotide treatment helps skin behave younger, stronger, and healthier—not just look temporarily refreshed.
Unlike many topical “miracle products,” these regenerative injectables work on a cellular level, which is why results can continue to improve months after treatment. You can learn more about the science behind wound healing and regenerative medicine on the British Association of Dermatologists.
👉 First time hearing about them? Here’s our full guide to polynucleotide treatment and how it works.
Why Are Polynucleotides Being Called the Salmon Sperm Treatment?
The unusual nickname comes from the source of the DNA: in many formulations, it’s extracted and purified from salmon sperm. Before you panic, don’t worry—it’s highly refined, sterile, and clinically safe.
This natural origin is part of what makes salmon sperm injection so effective. The DNA structure is remarkably similar to human DNA, which means our skin cells can recognise and utilise it for repair.
It’s one of those “stranger than fiction” facts—but behind the name is a technology that’s surprisingly elegant.
Polynucleotides vs. Skincare Fads: What’s the Difference?
It’s easy to dismiss anything hyped on social media as a fad. But polynucleotides are not your average “trending facial.” Here’s why:
- They work beneath the surface
Unlike viral creams or sheet masks that hydrate temporarily, polynucleotide injections stimulate collagen and elastin deep in the skin.
- Results build and last
Expect gradual, natural improvements over 6–9 months—not just a one-off glow.
- They’re clinically backed
Originally used in medicine for wound healing and ophthalmology, polynucleotides now have a growing body of evidence in aesthetics. PubMed offers multiple peer-reviewed studies confirming their safety and effectiveness.
The Benefits of Polynucleotide Treatment
Wondering why everyone’s talking about them? Here are some of the most popular reasons people are trying regenerative injectables:
- Hydration boost: plumper, fresher skin from improved water retention
- Skin repair: improved tone and texture for damaged or thinning skin
- Collagen support: stronger, more resilient skin structure
- Natural look: results are subtle and progressive, avoiding the “overdone” effect
Many of our patients combine skin repair injections like polynucleotides with other treatments such as anti-wrinkle injections for maximum effect.
Polynucleotides vs Fillers: What’s the Difference?
This is one of the most common questions patients ask us: how do polynucleotides compare to dermal fillers? While they’re both injectables, the goals and results are quite different.
| Feature | Polynucleotide Injections | Dermal Fillers |
| Purpose | Regenerate, repair, and improve skin quality | Restore lost volume or sculpt features |
| Main Ingredient | Purified DNA fragments (often salmon-derived) | Hyaluronic acid (HA) or similar gels |
| How They Work | Stimulate fibroblasts, boost collagen, improve hydration | Add volume by physically filling areas |
| Results | Subtle, natural improvements over weeks to months | Immediate lift or contouring |
| Longevity | 6–12 months, sometimes longer with maintenance | 6–18 months depending on area and product |
| Best For | Skin quality, texture, and hydration | Volume loss, deeper lines, and facial shaping |
So while fillers are brilliant for restoring volume (think cheeks, lips, or deep folds), polynucleotide injections are the choice for healthier, better-functioning skin. Many patients benefit from a combination, tailored to their goals.
Are Polynucleotides Just a Trend – or the Future of Skin Health?
The truth is, unlike short-lived crazes, polynucleotide treatment is part of a wider shift towards regenerative medicine. We’re moving beyond treatments that just mask symptoms and towards options that help the skin heal and function better.
At Look Lovely Medical Aesthetics, we’ve seen a huge rise in patients choosing polynucleotides not just for the face, but also for hands, under-eyes, and even neck rejuvenation. They’re becoming a core part of long-term skin health strategies, alongside proven favourites like skin boosters and microneedling.
If you’re curious about injectables but wary of trends, polynucleotides are worth serious consideration.
FAQs About Polynucleotides
- Do polynucleotides really come from salmon sperm?
Yes—but the DNA is highly purified, medical-grade, and safe. The similarity to human DNA makes it especially effective for repair.
- How many sessions will I need?
Most patients benefit from 2–3 sessions spaced a few weeks apart, with maintenance every 6–12 months.
- Do results look natural?
Absolutely. Improvements build gradually, so you’ll look fresher without the “done” look.
- Can I combine polynucleotides with other treatments?
Yes. Many patients pair them with anti-wrinkle treatment or skin boosters for enhanced results.
- Are they safe?
Polynucleotides have been used in medicine for decades and are considered very safe when performed by trained practitioners.
Final Thoughts
So, are polynucleotides just a passing beauty trend? The science says no.
Backed by clinical research, with results that last and benefits that go beyond the surface, salmon sperm injections are more than hype—they’re a regenerative tool for healthier, stronger, more radiant skin.
If you’re ready to explore polynucleotide treatments in London, our doctor-led team at Look Lovely Medical Aesthetics can guide you through whether they’re right for you. And if you’d like to compare them with other options, check out our blog on The Smart Edit: How to Choose the Right Anti-Ageing Treatments.’
