Film-Forming Agent

Tremella Fuciformis Polysaccharide

INCI: TREMELLA FUCIFORMIS POLYSACCHARIDE

Reviewed by Kate · Last updated 18 Aug 2026

Also known as: Tremella Fuciformis Polysaccharide

A polysaccharide extract from snow mushroom that helps support skin hydration and antioxidant defence

Best For Skin Types

All, Dry, Sensitive, Mature

Addresses

Hydration, Dryness, Fine lines

Usage Frequency

Daily

What Is Tremella Fuciformis Polysaccharide?

Tremella fuciformis polysaccharide is extracted from snow mushroom, an edible fungus used in traditional Asian medicine and cuisine for centuries. The extract contains complex carbohydrate molecules (polysaccharides) that have been studied for their potential effects on skin health.

In skincare formulations, this ingredient serves multiple functions: it can help stabilise emulsions, form a light protective film on the skin surface, and deliver hydrating and conditioning properties. It is used in roughly 0.3% of skincare products, often appearing in hydrating serums and moisturisers.

Benefits for Your Skin

How It Works

Tremella fuciformis polysaccharides appear to work primarily through antioxidant mechanisms. Laboratory and animal studies suggest the extract can reduce reactive oxygen species (ROS)—unstable molecules that damage skin cells—and upregulate the skin's own antioxidant defences, particularly enzymes involved in protecting against oxidative stress.

At a practical level, the polysaccharides also have humectant properties, meaning they attract water to the skin surface, and can form a light protective film that helps reduce transepidermal water loss. However, most existing research has been conducted in laboratory settings or animal models; robust clinical studies in human skin are needed to confirm these benefits.

Clinical Evidence & References

In vitro and animal model studies suggest Tremella fuciformis polysaccharides may offer photoprotection against UV-induced damage and support skin cell resilience against oxidative stress. Research has also explored potential anti-inflammatory and anti-ageing pathways, though these findings remain largely theoretical at this stage.

It is important to note that clinical evidence in human subjects is currently limited. Most published research involves cell cultures or mouse models, which do not always translate to measurable benefits in living human skin. Further well-designed clinical trials would be needed to establish efficacy and optimal use in skincare.

How to Use

Tremella fuciformis polysaccharide is typically used as part of a hydrating serum or moisturiser formulation rather than as a standalone treatment. Apply to clean, slightly damp skin morning and/or evening. It pairs well with other hydrating and antioxidant ingredients. Start with daily use and adjust based on your skin's response; there is no evidence suggesting need for cycling off this ingredient.

Safety & Precautions

Tremella fuciformis polysaccharide is generally well-tolerated and has a low sensitising potential. It is suitable for most skin types, including sensitive skin.

Frequently Asked Questions

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