What it is
This ingredient is a high-molecular-weight polysaccharide isolated from Tremella fuciformis, the snow or silver-ear mushroom, prized for its strong water-binding capacity. In sunscreens and other cosmetics it functions as a humectant and skin-conditioning agent, helping the formula hold moisture and lending a smooth, cushioned feel, and it is often compared to hyaluronic acid for its moisture-binding behavior. It is a supportive hydrating ingredient and has no UV-filtering role.
Safety & warnings
Snow mushroom polysaccharide is generally well tolerated and is not a common sensitizer or comedogenic concern at typical use levels, as it is a large water-binding molecule rather than an oil.
Origin & sourcing
It is a naturally derived ingredient obtained from the fruiting body of the snow mushroom (Tremella fuciformis), an edible fungus used in East Asian cuisine and traditional skincare.
History
The snow mushroom has a long history of use in East Asian culinary and beauty traditions, which underpins its modern adoption as a moisture-binding cosmetic ingredient.
Questions everyone asks
What does snow mushroom polysaccharide do?
It is a humectant that binds water to keep the skin and formula hydrated, giving a smooth, cushioned feel.
How does it compare to hyaluronic acid?
It is often compared to hyaluronic acid because it also holds large amounts of water, though it is a distinct mushroom-derived polysaccharide.