Ingredient review
Fermented Longan Fruit Extract
INCI: AUREOBASIDIUM PULLULANS/DIMOCARPUS LONGAN FRUIT EXTRACT FERMENT FILTRATE
A gentle, fermented botanical extract that may offer antioxidant benefits and light hydration, but research is still emerging.
In plain English
This ingredient is made by fermenting longan fruit (a tropical fruit similar to lychee) with a type of yeast. The fermentation process can break down the fruit's natural compounds, potentially making them more absorbable by the skin. It's used in skincare to provide antioxidant protection (helping to fight damage from pollution and UV exposure) and a small amount of hydration. Think of it as a gentle, natural-sourced ingredient that supports skin health without strong active effects.
Quick decision guide
Useful, but context matters
Fermented Longan Fruit Extract is generally a lower-concern ingredient when the full formula suits your skin.
Plain-English read
Treat this as a practical screening step before you compare products that contain this ingredient.
- Step 1Start with the score, then check the irritation and clogging risk before judging Fermented Longan Fruit Extract.
- Step 2Use the "Best for" and "Use caution if" sections to match the ingredient to your skin, not just to a marketing claim.
- Step 3If a product stings, breaks you out, or worsens irritation, judge the finished formula and stop using it even if the ingredient scores well.
Score terms in plain English
Irritation risk
lowLess likely to sting, burn, or bother most users, though sensitive skin can still react.
Clogging risk
lowLess likely to feel heavy or contribute to clogged pores for most skin types.
Evidence level
emergingThe ingredient may be promising, but claims should be treated more cautiously.
What it is
A fermented filtrate derived from the fruit of the longan tree (Dimocarpus longan) and the yeast Aureobasidium pullulans. The fermentation process creates a mixture of amino acids, sugars, and polyphenols.
How it works
The fermentation process breaks down longan fruit compounds into smaller molecules that may be more easily absorbed by the skin. The resulting filtrate contains antioxidants (like polyphenols) that can neutralize free radicals, and natural sugars that provide light humectant (water-attracting) properties to help keep skin hydrated.
Pros
Gentle antioxidant
Provides antioxidant benefits without the irritation potential of some stronger active ingredients like vitamin C in high concentrations.
Light hydration
The natural sugars in the ferment can attract water to the skin's surface, offering a subtle moisturizing effect that works well in lightweight formulas.
Cons and cautions
Limited research
Most evidence comes from lab studies or traditional use of longan fruit; there are few human clinical trials specifically on this fermented extract for skincare.
Potential allergen
As a fruit-derived ingredient, it may cause allergic reactions in people with sensitivities to longan or related fruits, though this is rare.
Best for
- Anyone looking for a gentle antioxidant ingredient
- Those interested in fermented skincare for added bioavailability
Use caution if
- Individuals with known allergies to longan or related fruits (lychee, rambutan)
Usage tips
Safety summary
Considered safe for topical use with low irritation and comedogenic risk. As with any new ingredient, patch test if you have sensitive skin or fruit allergies.
Research notes
Research on longan fruit extract shows antioxidant and anti-inflammatory activity in lab studies. The fermentation step may enhance bioavailability, but direct clinical evidence for this specific ferment filtrate is limited.
Common label clues
- Typical concentration
- 1-5% in leave-on products
- Regulatory status
- Generally recognized as safe for cosmetic use in the EU and US, with no specific restrictions.
- Common uses
- Serums, Moisturizers, Toners
- Environmental note
- Longan is a sustainably farmed tropical fruit in many regions; fermentation is a low-energy process, making this ingredient relatively eco-friendly.
Good to know
- The fermentation process can also produce natural preservative compounds, which may help extend product shelf life.
- Aureobasidium pullulans is a yeast commonly used in biotechnology for producing polysaccharides like pullulan.
Common questions
What is Fermented Longan Fruit Extract in beauty products?
This ingredient is made by fermenting longan fruit (a tropical fruit similar to lychee) with a type of yeast. The fermentation process can break down the fruit's natural compounds, potentially making them more absorbable by the skin. It's used in skincare to provide antioxidant protection (helping to fight damage from pollution and UV exposure) and a small amount of hydration. Think of it as a gentle, natural-sourced ingredient that supports skin health without strong active effects.
What does Fermented Longan Fruit Extract do in a beauty product?
The fermentation process breaks down longan fruit compounds into smaller molecules that may be more easily absorbed by the skin. The resulting filtrate contains antioxidants (like polyphenols) that can neutralize free radicals, and natural sugars that provide light humectant (water-attracting) properties to help keep skin hydrated.
Is Fermented Longan Fruit Extract safe for most people?
Considered safe for topical use with low irritation and comedogenic risk. As with any new ingredient, patch test if you have sensitive skin or fruit allergies.
Who should be careful with Fermented Longan Fruit Extract?
Individuals with known allergies to longan or related fruits (lychee, rambutan)
Research sources
Ingredient reviews are educational and are not medical advice. Patch test new products and ask a licensed clinician about persistent irritation, allergies, pregnancy-specific questions, or diagnosed skin conditions.