Salmon Sperm Skincare Is Surging. Here Is What Dermatologists Say About PDRN and Glass Skin
PDRN skincare is trending fast. Here's what dermatologists say about the viral K-beauty ingredient.
Search interest in one aesthetic treatment has jumped 1,566%, and PDRN Skincare is the driving force behind the boom. According to a report from Two Face Aesthetics, polynucleotides have become one of the fastest growing cosmetic categories of the past five years, fueled by South Korea’s pursuit of dewy, poreless “glass skin.”
Unlike most viral beauty crazes, this one arrives with a stack of research. Dermatologists interviewed by Cosmopolitan, Byrdie and Women’s Health say the ingredient has quietly been studied for decades.
“PDRN has real staying power because there are decades of science-based research that is supported by medical use, which gives it credibility,” Melda Isaac, MD, a dermatologist, told Cosmopolitan.
What PDRN actually is
The acronym stands for polydeoxyribonucleotide, and the source is unusual. Roberta Del Campo, MD, board-certified dermatologist and chief medical officer at Skin Laundry, told Byrdie that PDRN is “essentially purified DNA fragments extracted from salmon sperm.” She explained that “these polynucleotides are biocompatible with human DNA, meaning our skin cells recognize and respond to them as if they were our own repair signals.”
The compound can also be derived from certain trout, though salmon is the most common source in skincare. The extracted material is filtered to remove impurities and sterilized before it ever touches your face.
“Studies indicate that salmon sperm are the most suitable source for the extraction of highly purified DNA without the risk of impurities due to their low levels of proteins, peptides, and other contaminants compared to other DNA sources,” Isaac told Cosmopolitan.
How PDRN skincare works on your skin
Once applied, PDRN activates adenosine A2A receptors in the skin, kicking off a cascade of regenerative processes. Del Campo laid out the effects for Byrdie.
“It stimulates fibroblasts to produce more collagen and elastin, improves microcirculation to deliver nutrients and oxygen to skin cells, accelerates tissue repair and wound healing (making it ideal post-laser or post-procedure), reduces inflammation and oxidative stress, and enhances the skin’s moisture retention by strengthening the barrier,” she said.
In plainer language, that translates to plumper, more hydrated and faster-healing skin.
Why the science behind PDRN holds up
PDRN has been studied since the 1990s, primarily for its role in wound healing and tissue repair through injection or topical application on injured skin.
“Its regenerative properties support cellular renewal and stimulate fibroblasts to increase collagen production, helping skin recover more efficiently after stress or injury,” Anetta Reszko, MD, FAAD, a board-certified dermatologist in New York City, told Women’s Health.
Collagen production is central to a youthful complexion because it provides the structural scaffolding that gives skin firmness and elasticity. Over time, injected PDRN is thought to “improve tone, firmness, and overall skin quality, particularly in skin that appears depleted or slow to repair,” Reszko told Women’s Health.
Who should avoid PDRN skincare
There is really only one group that needs to sit this trend out. “[Those with] fish allergies. People with seafood sensitivities should patch test or avoid,” Marnie Nussbaum, MD, FAAD, founder of Marnie Nussbaum Dermatology and Aesthetics, told Byrdie.
Otherwise, Del Campo told Byrdie that PDRN is generally well tolerated across all skin types.
How to use PDRN skincare at home
The ingredient works best in leave-on formulas like serums and creams. Serums tend to be the smartest entry point because their smaller molecule sizes penetrate more deeply, giving the polynucleotides a better shot at reaching the layers of skin where collagen production happens.
Look for products focused on hydration, rejuvenation and post-procedure healing. Korean skincare brands were early to build formulas around PDRN, so K-beauty shelves are a natural starting point for anyone curious about what all the search-traffic fuss is about.
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