Porphyra Yezoensis Extract

Porphyra yezoensis extract is derived from a red seaweed (nori) commonly used in food. The ingredient contains naturally occurring compounds called mycosporine-like amino acids (MAAs), particularly porphyra-334 and shinorine, alongside phenolic compounds that contribute to its antioxidant profile.In skincare formulations, this extract functions as a skin conditioner, working to support the skin's natural defences against oxidative stress and environmental damage. It is incorporated into products at relatively modest concentrations.

Porphyra yezoensis extract operates primarily through its content of mycosporine-like amino acids and phenolic compounds, which function as antioxidants. These compounds help neutralise free radicals generated by UV exposure and air pollution, reducing oxidative stress within skin cells.The extract also appears to influence how skin cells respond to environmental triggers. Research indicates it may modulate the aryl hydrocarbon receptor (AhR) signalling pathway—a mechanism by which skin detects and responds to pollutants—helping to limit excessive inflammatory responses to urban particulate…

Porphyra yezoensis extract is typically found in serums, essences, and treatment products rather than as a standalone ingredient. It works well alongside other antioxidants and environmental protection strategies, including daily sunscreen use. As a water-soluble extract, it integrates readily into lightweight formulations and pairs well with hydrating ingredients.

Porphyra yezoensis extract is derived from an edible seaweed and is generally well-tolerated across skin types. Those with known sensitivity to seaweed or iodine should exercise caution, as red algae may contain iodine.