Algae Extract
Algae Extract is a broad INCI name covering extracts derived from any of approximately 20,000 species of algae, including blue-green, red, and brown varieties. The name was originally published in 1979 and designated with a retired status in 2015, with newer entries expected to use genus- and species-specific names. Its official CosIng functions include humectant, emollient, skin conditioning, fragrance, and oral care. Because the name is non-specific, the actual composition and activity of the ingredient can vary considerably depending on the source alga and extraction method used.
Algae extracts are rich in biologically active metabolites including antioxidants, anti-inflammatory agents, alginates, polysaccharides, and carotenoids, making them primarily useful as moisturizing and emollient agents. They also show potential for combating skin aging, pigmentation, and microbial activity, though specific benefits depend heavily on the algae species used. The most probable and consistent use case is as a moisturizer and emollient, with possible additional anti-aging properties.
Because "Algae Extract" is a non-specific, retired INCI name covering thousands of possible species and extraction methods, the actual safety and efficacy profile cannot be determined without knowing the exact source alga. Consumers and formulators should seek clarification from brands on the specific algae used.
