Saccharina Angustata/Undaria Pinnatifida Extract

Saccharina Angustata and Undaria Pinnatifida are brown seaweed species found in cold oceanic waters. When processed into an extract, they yield polysaccharides, amino acids, and trace minerals that have long been used in skincare formulations.In cosmetics, this ingredient functions as an emollient and skin conditioner. It works to soften the outer layer of skin and help maintain hydration by forming a protective film on the surface.

The seaweed extract contains polysaccharides that absorb and bind water to the skin surface, acting as a humectant and emollient. This dual action helps prevent transepidermal water loss whilst also smoothing and conditioning the stratum corneum.The trace minerals and amino acids in the extract may also provide mild antioxidant and soothing benefits, though these are secondary to its primary conditioning function.

This ingredient is typically found in moisturisers, serums, and conditioning masks rather than actives-focused products. It works well alongside humectants like glycerin and other emollients. Use as directed in your formulation — there is no need for additional timing considerations.

Generally well-tolerated across skin types. Those with seaweed or iodine sensitivity should check ingredient lists carefully, though sensitisation is rare.