Auricularia Polytricha Fruiting Body Extract: What Is It, Cosmetic Uses, Benefits & Side Effects

Curious about this ingredient? In this article we're explaining exactly what it is and why it's used within cosmetic formulations.
Updated on: June 23, 2025
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All information on this page is verified using publicly available nomenclature standards and reference materials from The Personal Care Products Council (PCPC) and the European Commission's CosIng database. Our analyses are based on technical data from these sources to ensure accuracy and reliability.

What Is Auricularia Polytricha Fruiting Body Extract?

Auricularia Polytricha Fruiting Body Extract comes from the fruiting body of the Auricularia polytricha mushroom, often called wood ear or cloud ear. The extract is rich in naturally occurring polysaccharides, beta glucans, amino acids and trace minerals that help bind moisture to the skin. Wood ear mushrooms have been enjoyed in East Asian cuisine and traditional beauty rituals for centuries, and their reputation for moisture retention drew the attention of modern formulators looking for plant based alternatives to synthetic hydrators.

To make the cosmetic grade extract, cultivated mushrooms are harvested, thoroughly cleaned, then gently dried to preserve their actives. The dried fruiting bodies are soaked in water or a water-glycerin blend at controlled temperatures to pull out the water soluble compounds. The liquid is then filtered, concentrated and sometimes standardized for polysaccharide content before being added to skin care formulations.

You will commonly find Auricularia Polytricha Fruiting Body Extract in hydration focused products such as sheet masks, gel masks, lightweight serums, anti aging creams, daily moisturizers, after sun lotions and soothing eye treatments.

Auricularia Polytricha Fruiting Body Extract’s Cosmetic Benefits/Uses

This multitasking mushroom brings several skin friendly actions to a formula

  • Humectant – draws water from the environment and deeper skin layers to the surface, boosting immediate hydration and giving skin a plump fresh look
  • Skin Conditioning – softens rough patches and helps smooth texture thanks to its film forming polysaccharides that leave a silky finish
  • Skin Protecting – forms a light breathable barrier that shields the skin from daily pollutants and keeps moisture from escaping, supporting a resilient complexion

Who Can Use Auricularia Polytricha Fruiting Body Extract

This extract is gentle enough for most skin types. Dry and dehydrated skin benefit the most from its water-binding sugars while oily and combination skin appreciate its light non-greasy feel. Sensitive skin generally tolerates it well since it is free of fragrance and harsh actives.

The ingredient is entirely mushroom-derived, with no animal by-products or animal testing required for its production, making it suitable for both vegans and vegetarians.

Pregnant or breastfeeding individuals can usually use products containing Auricularia Polytricha Fruiting Body Extract because it is applied topically and does not contain known endocrine disruptors. This is not medical advice and anyone who is expecting or nursing should confirm any new skincare product with a healthcare professional to stay on the safe side.

The extract does not make skin more sensitive to sunlight so it is not regarded as photosensitising. It also plays well with common actives such as niacinamide, vitamin C, AHAs and retinoids, adding hydration without increasing irritation.

Potential Side Effects/Adverse Reactions

Side effects from topical Auricularia Polytricha Fruiting Body Extract differ from person to person. The following points outline potential reactions, but they are uncommon when the ingredient is used correctly in a well-formulated product.

  • Allergic response in individuals with mushroom sensitivity
  • Mild redness or itching on very reactive skin
  • Temporary stinging if applied to broken or compromised skin
  • Rare contact dermatitis from formulation preservatives rather than the extract itself

If irritation or any adverse reaction occurs stop use immediately and seek advice from a qualified health professional.

Comedogenic Rating

Rating: 0–1 out of 5

Auricularia Polytricha Fruiting Body Extract is almost entirely water soluble with no heavy oils or waxes so it does not sit in pores or create blockages. Its lightweight polysaccharide film lets skin breathe which keeps the risk of clogging very low. Because of this the extract is generally suitable for people who deal with acne or frequent breakouts.

Keep in mind the finished product matters too. If the formula pairs the extract with rich butters or occlusive silicones the overall pore clogging potential can rise even though the mushroom itself scores low.

Summary

Auricularia Polytricha Fruiting Body Extract works as a humectant that pulls in water, a skin conditioner that smooths texture and a protective agent that lays down a light moisture shield. Its blend of polysaccharides and beta glucans is what delivers these actions while still feeling weightless.

The ingredient is gaining traction thanks to the wider mushroom boom in beauty yet it is still less common than classics like hyaluronic acid. Those who have tried it often like the fresh hydrated finish without greasiness.

Safety wise it is considered low risk for most users with rare reports of irritation or allergy. As with any new skincare product a quick patch test on a small area is smart before going all in.

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