Rhus Semialata 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 30, 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 Rhus Semialata Extract?

Rhus Semialata Extract comes from the whole Chinese sumach plant, a small tree that grows in parts of Asia. The leaves and galls of this plant are naturally packed with tannins, flavonoids and other polyphenols, compounds known for their ability to bind water and calm the skin. Long before it turned up in creams and serums, Chinese sumach was used to tan leather, dye fabrics and soothe minor skin troubles in folk remedies. Today cosmetic makers harvest the plant, dry and grind it, then run it through a gentle water or alcohol extraction. The liquid is filtered and concentrated to create a stable ingredient that blends easily into formulas. You will most often spot Rhus Semialata Extract in sheet masks, hydrating toners, anti aging creams, soothing lotions and scalp or after sun treatments where a comforting feel is desired.

Rhus Semialata Extract’s Cosmetic Benefits/Uses

This plant extract is valued in skin care for one main job: skin conditioning. As a conditioner it helps soften the surface, smooth rough patches and leave the skin feeling comfortably hydrated. Its natural tannins can also give a light tightening sensation that many people enjoy, making the skin look a bit fresher and more refined.

Who Can Use Rhus Semialata Extract

Rhus Semialata Extract is generally friendly to most skin types. Its water-binding polyphenols add light moisture so normal and combination skin tend to enjoy it. The gentle astringent feel can help balance excess oil which makes it a nice option for oily skin too. Very dry or eczema-prone skin could feel a little tight after use because of the natural tannins so pairing it with a richer cream may be needed.

The extract is completely plant based, obtained from the Chinese sumach tree with no animal derived solvents or processing aids. Because of this it fits easily into vegan and vegetarian routines.

No specific warnings exist for use during pregnancy or while breastfeeding. The extract does not contain retinoids, salicylic acid or other ingredients commonly flagged for expecting mothers. That said this article is not medical advice and anyone who is pregnant or nursing should ask their doctor before starting any new skincare product just to be extra safe.

The ingredient has not been linked to increased photosensitivity so it will not make the skin more prone to sunburn. Standard daily sunscreen is still recommended for overall skin health.

Potential Side Effects/Adverse Reactions

Reactions to Rhus Semialata Extract differ from person to person. The points below describe potential side effects but most people will not notice any problems when the ingredient is used correctly in a professionally formulated product.

  • Skin irritation such as redness itching or burning in sensitive individuals
  • Excessive dryness or a tight feeling if used in high concentrations on very dry skin
  • Allergic contact dermatitis in people who are sensitive to plants in the Anacardaceae family like mango or cashew
  • Mild temporary staining of light fabrics or towels due to the plant’s natural pigments

If any discomfort swelling or rash appears stop using the product and seek advice from a healthcare professional.

Comedogenic Rating

Rating: 1 out of 5

Rhus Semialata Extract is mainly composed of water-soluble tannins and polyphenols that do not leave behind oily residues. Commercial extracts are usually delivered in water or lightweight glycols, both of which rinse or absorb easily without blocking pores. Because it lacks heavy oils, waxes or fatty alcohols, the risk of it trapping dead cells and sebum inside follicles is very low. For that reason most formulators consider it non-pore-clogging.

This makes the ingredient generally suitable for people prone to acne or frequent breakouts.

If the finished product pairs the extract with heavier occlusives or butters the overall formula could still feel greasy so always check the full ingredient list.

Summary

Rhus Semialata Extract conditions the skin by binding water to the surface, softening rough spots and offering a mild toning feel thanks to its natural tannins. These same polyphenols provide a touch of antioxidant support which helps keep the complexion looking fresh.

You will not see it headlining every trending serum yet. It remains a niche botanical that shows up in calming toners, sheet masks or soothing after sun gels rather than mass-market moisturizers. When it does appear, it is usually there to add a gentle comforting finish rather than dramatic actives.

Safety wise the extract scores well. It is plant derived, generally non-irritating and sits at the low end of the comedogenic scale. Allergies are rare but possible in people sensitive to the sumach family. As with any new skincare ingredient do a small patch test before full use to be on the safe side.

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