Tremella

What tremella is

Tremella is Tremella fuciformis Berk., family Tremellaceae, an accepted species name in the GBIF taxonomy database.[1] It is also called snow mushroom, and a dermatology review describes it as an edible mushroom historically popular in herbal and Asian medicine and cuisine.[2] Another review calls it widely cultivated and used both as food and as a medicinal ingredient in traditional Chinese medicine.[3] Product pages may call it snow fungus or use only a common name, so check the scientific name on the label. See mushroom names.

One review of its bioactive compounds focuses on polysaccharides (large sugar-based molecules).[3] Results on an extract or isolated compound do not transfer to the whole mushroom, a drink or a skin cream.

Traditional use

Tremella has been used in Asian cooking and in traditional Chinese medicine.[2][3] The sources we read do not describe specific traditional claims in detail, so we do not list any here. Traditional use is not evidence of effect.

What research shows

Forms and why they matter

Whole dried or fresh tremella as a food, a polysaccharide extract in a capsule, a skin-care ingredient and a ready-made drink are different products. The memory trial used a tremella supplement at stated amounts,[4] not a cup of tremella soup. Labels differ between products, so check what is actually in one; see skin health and mushrooms for skin claims and mushroom food portions versus supplement amounts.

Lab data and chemistry

Tremella is mostly water-loving sugar chains. The laboratory papers we read describe its main "active" material as a family of polysaccharides (long sugar-based molecules), not a single compound. Wikidata (with the LOTUS natural-products imports) lists only one compound for Tremella fuciformis, gentisic acid, so that database is not a useful guide here; the rest of this section comes from papers we read. A presence entry means "reported in at least one study", not "present in every product".

What the laboratory literature reports

Measured values

No USDA FoodData Central entry for tremella exists, so there are no standard nutrition-label numbers here. The numbers below are from open papers.

Hyaluronic acid, moisture and skin: what the lab work shows

Tremella polysaccharides are often described as "plant hyaluronic acid" in skin-care marketing. Here is what we read:

• A cell study compared a commercial tremella extract with hyaluronic acid on human skin fibroblasts (cells from the deeper skin layer). Neither affected cell survival. The extract increased DNA synthesis; collagen synthesis rose with hyaluronic acid and with the higher extract level (500 micrograms per mL). The authors say the mechanisms differ and that more work is needed.[5]
• A separate cell-model study of a "fungal-derived hyaluronic acid" from tremella reports it was stable in simulated digestion and crossed a gut-cell layer in vitro.[9] That is a laboratory model, not a human result.
• A 2026 review of edible fungi and skin says oral hyaluronan has human trials that measure skin hydration and wrinkles, but tremella polysaccharides do not: the evidence is mainly animal, gut-microbiota-linked, or topical.[11] We found no human trial of eating tremella for skin.

What the numbers do and do not mean

• Polysaccharide structure and amounts vary with strain, growing substrate, drying and extraction, so a figure from one study is not a label value for any product.
• A lab measurement or a cell result does not show a health effect. Skin findings here are cells, animals or topical use; the only human trial we found is the memory study above.
• Tremella is a poor source of ergothioneine compared with many other edible mushrooms, so it is not the one to pick for that compound.[8]
• Water-holding figures describe a dry powder soaking up water in a lab dish, not what happens in skin after eating it.
• Tremella is widely grown as a fruiting body, but extracts can also come from spores, mycelium or fermentation broth;[6] ask which on the label. See fruiting body versus mycelium.