Exploring the potential of icelandic seaweeds extracts produced by aqueous pulsed electric fields-assisted extraction for cosmetic applications

What if the secret to youthful, glowing skin lies not in a lab, but in the cold, pristine waters of Iceland? New research suggests that a common seaweed could be the next big thing in natural cosmetics.

The global demand for natural ingredients is booming, and not just in our food—our skincare is next. Scientists are turning to the ocean for answers, and three Icelandic seaweeds just stepped into the spotlight. Using a gentle technique called pulsed electric fields (PEF), researchers extracted bioactive compounds from Ulva lactuca, Alaria esculenta, and Palmaria palmata, comparing them to traditional hot water extraction. The results? PEF matched the old method's performance while being faster and non-thermal—a win for both quality and energy.

Among the trio, Alaria esculenta stole the show. It boasted the highest levels of phenolic compounds (8869.7 µg GAE/g dry weight) and flavonoids (12,098.7 µg QE/g dry weight), and its antioxidant capacity was unmatched. But the real magic lies in its anti-enzymatic powers: the extract inhibited collagenase by 76.9%, elastase by 72.8%, tyrosinase by 93.0%, and hyaluronidase by a perfect 100%. These enzymes break down skin's structure and pigment, so blocking them is key for anti-aging and skin-whitening products.

This isn't a finished product yet—it's a promising first step. The study suggests that Icelandic Alaria esculenta, processed with PEF, could become a star ingredient in natural cosmetics. For now, it's a beautiful glimpse of what the ocean can offer our beauty routines.

Key Points

• PEF extraction matches hot water but is faster and non-thermal.
• Alaria esculenta shows highest phenolic and flavonoid content.
• Extract inhibits collagenase, elastase, tyrosinase, hyaluronidase by up to 100%.