Algae Exopolysaccharides

Algae exopolysaccharides are complex carbohydrate compounds naturally produced by algae as a protective mechanism against environmental stress. These polymers form a gel-like layer around algal cells, helping them survive fluctuations in temperature, UV exposure and water availability. When extracted and incorporated into skincare, they retain these protective properties and function as film-formers and humectants.

In formulations, algae exopolysaccharides work to hydrate the skin surface, support the skin barrier and create a protective film. They are derived from renewable resources and align with sustainable ingredient sourcing practices.

Algae exopolysaccharides are humectants, meaning they attract and bind water molecules to the skin. This hydrating action plumps the skin surface and can temporarily improve the appearance of fine lines. Additionally, they form a semi-occlusive film on the skin—similar to how they protect algae in nature—which helps reduce transepidermal water loss and supports barrier function.

The polysaccharide structure also interacts with the skin's natural moisturising factors, enhancing overall hydration and skin conditioning effects.

Algae exopolysaccharides are typically incorporated into serums, moisturisers and hydrating masks. They work well alongside other hydrating and barrier-supporting ingredients such as ceramides, hyaluronic acid and niacinamide. Apply to clean, damp skin to allow the humectant to draw moisture into the skin barrier.