Sargassum Pacificum Thallus Extract

Sargassum Pacificum Thallus Extract is derived from a species of brown macroalgae (seaweed) harvested from the Pacific Ocean. Like other seaweed extracts used in skincare, it contains naturally occurring polysaccharides, minerals and amino acids that are thought to have moisturising and conditioning properties.In formulations, it functions as an emollient and skin conditioning agent, helping to soften the skin surface and support the skin barrier. It is typically used in concentrations that complement other hydrating or nourishing ingredients rather than serve as a primary active.

Sargassum extract works primarily through hydration and film-forming. The polysaccharides in seaweed have hygroscopic properties, meaning they can attract and hold water in the outer layers of the skin, helping maintain moisture. This creates a subtle protective film on the skin surface.The amino acids and minerals present may also support the skin's structural integrity and natural barrier function, though the extent of these benefits at typical cosmetic concentrations remains modest.

This ingredient is most effective as part of a layered routine. It works well in serums, moisturisers and body care products where it can sit on or absorb into the skin. There are no known issues with frequency of use — it can be incorporated into daily skincare without concern. Combine with other hydrating ingredients such as glycerin or hyaluronic acid for enhanced effect.

Generally well-tolerated and suitable for most skin types. Those with shellfish or iodine sensitivities should note that seaweed extracts are marine-derived, though allergic reactions are uncommon.