Fraxinus Rhynchophylla Leaf 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 Fraxinus Rhynchophylla Leaf Extract?

Fraxinus Rhynchophylla Leaf Extract comes from the leaves of Fraxinus rhynchophylla, a deciduous ash tree native to East Asia and part of the olive family. The leaves are rich in phenolic compounds such as fraxin, esculetin and flavonoids that give the extract its natural protective qualities. Traditionally the tree has been valued in Korean and Chinese folk applications for soothing skin discomfort, and modern formulators took note of its antioxidant profile in the early 2000s when plant based skincare surged. To create the cosmetic grade extract, freshly harvested leaves are cleaned, dried and then steeped in a food grade solvent like glycerin or ethanol. The liquid is filtered and concentrated, leaving a clear to amber solution that blends easily into water based formulations. You will most often see this ingredient in toners, essence style boosters, lightweight moisturizers, sheet masks and anti aging serums that aim to defend against daily environmental stress.

Fraxinus Rhynchophylla Leaf Extract’s Cosmetic Benefits/Uses

This leaf derived ingredient supports skin health in two main ways

  • Antioxidant: The polyphenols in the extract neutralize free radicals created by UV light and pollution which helps limit the look of premature lines and dullness while supporting overall skin resilience.
  • Skin conditioning: It leaves a soft, smooth feel on the surface, lightly hydrates and can calm the appearance of temporary redness making formulas more comforting for daily wear.

Who Can Use Fraxinus Rhynchophylla Leaf Extract

This botanical suits almost every skin type including normal, dry, combination and oily skin thanks to its light texture and calming antioxidant profile. Sensitive or easily irritated complexions often tolerate it well because the extract is not acidic or exfoliating, though anyone with a known ash tree allergy should avoid it.

The ingredient is plant derived and typically processed with vegan friendly solvents so it is suitable for both vegans and vegetarians.

Current safety data shows no specific risks for pregnant or breastfeeding women when the extract is used in topical cosmetic concentrations. That said, this is not medical advice and anyone expecting or nursing should review any new skincare product with a healthcare professional.

Fraxinus Rhynchophylla Leaf Extract does not increase photosensitivity so there is no special sun avoidance required beyond daily SPF that dermatologists already recommend.

Potential Side Effects/Adverse Reactions

Individual responses to topical Fraxinus Rhynchophylla Leaf Extract can vary. The points below outline potential side effects, but most people will not experience them when the ingredient is formulated and used as intended.

  • Mild redness or stinging
  • Temporary itching on very sensitive skin
  • Contact dermatitis in those allergic to plants in the olive or ash family
  • Eye irritation if the product migrates into the eyes

If any of these reactions occur stop using the product and seek medical advice if symptoms persist or worsen.

Comedogenic Rating

Rating: 0‒1 out of 5

Fraxinus Rhynchophylla Leaf Extract is primarily water soluble and contains minimal lipids, so it is unlikely to clog pores. Its molecules are small enough to rinse away easily and it is usually added at low percentages alongside lightweight carriers. Because of this low rating the extract is generally suitable for acne-prone or breakout-prone skin. If a product containing the extract does trigger congestion it is more likely due to the overall formula or heavier emollients paired with it rather than the leaf extract itself.

Summary

Fraxinus Rhynchophylla Leaf Extract delivers antioxidant protection and skin conditioning thanks to its natural store of polyphenols, coumarins and flavonoids that scavenge free radicals and soothe visible irritation. These benefits make it a helpful supporting act in toners, essences and light moisturizers that aim to boost daily defense and comfort.

The ingredient is still a niche pick compared with mainstream botanicals like green tea or centella, yet it is gaining quiet traction in K-beauty inspired formulas where gentle antioxidants are prized.

Current data shows it to be a low-risk addition for most users when used at normal cosmetic levels. As with any new skincare step it is smart to run a quick patch test before full-face use to ensure personal compatibility.

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