Eleocharis Dulcis Tuber 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 27, 2025
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We verify all information on this page using publicly available nomenclature standards from The Personal Care Products Council (PCPC), the European Commission's CosIng database and documentation provided directly by ingredient manufacturers. Our analysis is based on technical data from these sources to ensure accuracy and reliability.

What Is Eleocharis Dulcis Tuber Extract?

Eleocharis Dulcis Tuber Extract comes from the tubers of Eleocharis dulcis, the same aquatic plant better known for producing crunchy water chestnuts in Asian cuisine. These underground storage organs are rich in carbohydrates, amino acids and natural sugars that help the plant retain moisture and resist harsh wetland conditions. Traditional cultures valued the tubers as both food and skin soothers, which led modern formulators to explore their topical benefits.

To create the extract, cleaned tubers are usually dried, ground and then steeped in a mix of water and mild solvents that pull out the water-binding sugars and conditioning compounds. After filtration and concentration, the resulting liquid or powder is standardized for consistency before it heads to the lab.

You will most often spot Eleocharis Dulcis Tuber Extract in hydrating sheet masks, daily moisturizers, soothing after-sun gels and lightweight anti-aging creams. Its plant-derived profile makes it popular in natural or clean-label lines as well as products that target dryness, dullness and early signs of aging.

Eleocharis Dulcis Tuber Extract’s Cosmetic Benefits/Uses

Eleocharis Dulcis Tuber Extract is prized in skin care formulas for its skin conditioning ability, meaning it helps keep skin soft, smooth and supple. The naturally occurring sugars draw water into the upper layers of the skin for an immediate plumping effect, while amino acids create a light film that slows moisture loss through the day. Regular use can leave skin looking healthier, better hydrated and more comfortable, making this extract a useful addition to products aimed at everyday moisture maintenance or post-treatment calming.

Who Can Use Eleocharis Dulcis Tuber Extract

This plant extract is generally well tolerated by all skin types, including dry, normal, combination and oily skin. Its lightweight water-binding sugars hydrate without leaving an occlusive film, so even those prone to clogged pores usually do fine. People with a known allergy to water chestnuts or other Cyperaceae plants should avoid it, as cross-reactivity is possible.

Because it comes entirely from a plant source and no animal derivatives are used during processing, Eleocharis Dulcis Tuber Extract is suitable for both vegans and vegetarians.

Current research shows no specific concerns for women who are pregnant or breastfeeding when the extract is used topically in cosmetic amounts. This is not medical advice and anyone who is pregnant or nursing should review any skincare product with a healthcare professional just to be safe.

The ingredient does not make skin more sensitive to the sun, so it will not increase photosensitivity. It also plays well with most other common skincare actives and preservatives.

Potential Side Effects/Adverse Reactions

Individual responses to Eleocharis Dulcis Tuber Extract can vary. The following outlines possible side effects, though they are uncommon when the ingredient is used properly in a well-formulated product.

  • Allergic contact dermatitis – redness, itching or swelling in those sensitive to water chestnut or related plants
  • Mild skin irritation – temporary stinging or burning if the extract is present at a high concentration or combined with other irritants
  • Breakouts – rarely, very acne-prone users may notice small pimples if the overall formula is too rich for their skin
  • Cross-reaction with other plant allergens – individuals with multiple botanical allergies could experience sensitization

If any irritation or adverse effect occurs stop use immediately and consult a healthcare professional.

Comedogenic Rating

Rating: 0–1 out of 5. Eleocharis Dulcis Tuber Extract is primarily water soluble sugars and amino acids that absorb quickly and leave no oily film, so it has very little tendency to block pores.

Most people prone to acne or breakouts can use products containing this extract without added risk.

The overall formula still matters; if the extract sits in a heavy cream packed with rich butters the product could feel pore clogging even though the extract itself is not.

Summary

Eleocharis Dulcis Tuber Extract conditions skin by pulling in water with its natural sugars then gently sealing that moisture with amino acids, leaving skin soft smooth and comfortably hydrated. Its plant based profile fits well with the growing demand for cleaner greener cosmetics, yet it remains a supporting player rather than a superstar so you will usually see it listed alongside better known hydrators like glycerin or hyaluronic acid.

Topical use is considered very safe with low irritation potential and no known photosensitivity. As with any new skincare ingredient it is wise to patch test a small area first to be sure your skin agrees with it.

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