Imagine a beauty secret so controversial it sounds like science fiction: fish DNA injected into the face to spark collagen and elastin. In a south Manchester clinic, 29-year-old Abby Warnes endures a sting as tiny fragments of trout or salmon DNA are injected, supposedly reviving tired skin. She says, „Ouch. Ouch,” and notes the aim: target problem areas and reduce acne scars. But the science behind polynucleotides is still evolving, and the hype may outpace evidence. While celebrities tout the treatment, regulators warn about untested products and uneven regulation. A handful of studies hint at rejuvenation, but few large, credible trials exist, and experts caution about potential infections, pigmentation changes, and allergies.
What are Polynucleotides and why are clinics using them?
Polynucleotides are short DNA fragments extracted from fish sperm; brands promote them as regenerative aids that may boost skin’s collagen and elastin production. Proponents argue they work with the body rather than simply filling lines, describing the approach as a regenerative boost rather than a traditional filler. Some practitioners even evoke a Benjamin Button moment, suggesting a backward aging effect, though the reality is far from certain and data remain limited. Celebrities have helped drive interest, with references to salmon DNA treatments as part of a modern skincare ritual.
Evidence, regulation, and safety concerns
The products are registered as medical devices with the Medicines and Healthcare products Regulatory Agency (MHRA) in the UK, but they are not medicines and have not received FDA approval in the United States. Critics warn that regulation is not as strict as with drugs, and products may reach the market without robust testing. Dr John Pagliaro cautions that while nucleotides are building blocks of DNA, injecting salmon DNA into the face is not yet proven to be safe or effective. Save Face’s Ashton Collins highlights the risk of untested products flooding the market, while the British College of Aesthetic Medicine’s Dr Sophie Shotter notes that polynucleotides are not a universal remedy and that other treatments with stronger data exist. Side effects can include redness, swelling, bruising, and in rare cases allergies, pigmentation changes, or infections if injections are not performed properly.
Experiences and costs
In the clinic, Abby’s treatment involved multiple tiny injections and was described as painful. Clinics report that roughly half of clients notice notable hydration, a healthier feel, or a more youthful appearance, with others seeing a tighter, fresher sensation but variable results. A typical session can cost between £200 and £500, with a recommendation of three sessions over several weeks and top‑ups every six to nine months. Stories from New York of a wedding glow‑up gone wrong illustrate that risks can persist long after treatment, including infections and persistent under-eye dark rings. High-profile endorsements from Charli XCX, the Kardashians, and Jennifer Aniston have amplified interest, but medical professionals stress that hype must be weighed against evidence.
Make an informed choice: questions to ask and alternatives
Experts emphasize seeking medically trained practitioners, requesting brand information, and understanding the level of evidence behind the product. Given regulatory gaps and potential side effects, patients should weigh polynucleotide injections against other options with stronger data. Dr Shotter points out that there are many treatments with credible safety records; the decision should be personalized, with informed consent and a clear discussion of risks, benefits, and realistic expectations. For some, non-invasive approaches or gradual, proven skincare regimens may offer safer, better-supported results.