Ingredient review
Tree of Heaven Bark Extract
INCI: Ailanthus altissima bark extract
A botanical extract with traditional astringent uses, but limited modern research on its skincare benefits.
In plain English
This is an extract from the bark of the Tree of Heaven, a plant native to China. In skincare, it's thought to help tighten pores and calm the skin, but there isn't much scientific proof yet. It's generally considered safe for most skin types when used in small amounts.
Quick decision guide
Useful, but context matters
Tree of Heaven Bark 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 Tree of Heaven Bark 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 plant-based ingredient made by soaking the bark of Ailanthus altissima in a solvent (like water or alcohol) to pull out its active compounds, such as tannins and flavonoids.
How it works
The tannins in the extract can bind to proteins on the skin's surface, creating a mild tightening effect that may temporarily reduce the appearance of pores. Some compounds also have antioxidant properties that help protect skin from environmental stress.
Pros
Gentle astringent
May help reduce the look of pores without the harshness of alcohol-based toners, making it suitable for daily use on normal to oily skin.
Antioxidant potential
Contains flavonoids that can neutralize free radicals, offering some protection against pollution and UV-induced oxidative stress.
Cons and cautions
Limited research
Most evidence comes from traditional use or lab studies; there are few well-designed human trials confirming its skincare benefits.
Allergy risk
As a plant extract, it can cause contact dermatitis in people sensitive to the Tree of Heaven or related species.
Best for
- People with oily or combination skin looking for a gentle astringent
- Those interested in traditional botanical ingredients
Use caution if
- Individuals with known allergies to the Simaroubaceae plant family
- Those with very sensitive or damaged skin
Usage tips
Safety summary
Low risk of irritation for most people, but those with plant allergies should patch test. No known serious safety concerns at cosmetic use levels.
Research notes
Preliminary lab studies suggest antioxidant and anti-inflammatory activity, but clinical evidence in humans is lacking. More research is needed to confirm efficacy.
Common label clues
- Typical concentration
- Typically used at 0.1–2% in leave-on products
- Regulatory status
- Generally recognized as safe for cosmetic use in the EU and US when used at typical concentrations, but not approved as a drug ingredient.
- Common uses
- Toners, Serums, Masks
- Environmental note
- Ailanthus altissima is an invasive species in many parts of the world; sustainable harvesting practices are important to avoid ecological disruption.
Good to know
- The Tree of Heaven is considered invasive in some regions, so sourcing may vary.
- This extract is often combined with other soothing botanicals in formulations.
Common questions
What is Tree of Heaven Bark Extract in beauty products?
This is an extract from the bark of the Tree of Heaven, a plant native to China. In skincare, it's thought to help tighten pores and calm the skin, but there isn't much scientific proof yet. It's generally considered safe for most skin types when used in small amounts.
What does Tree of Heaven Bark Extract do in a beauty product?
The tannins in the extract can bind to proteins on the skin's surface, creating a mild tightening effect that may temporarily reduce the appearance of pores. Some compounds also have antioxidant properties that help protect skin from environmental stress.
Is Tree of Heaven Bark Extract safe for most people?
Low risk of irritation for most people, but those with plant allergies should patch test. No known serious safety concerns at cosmetic use levels.
Who should be careful with Tree of Heaven Bark Extract?
Individuals with known allergies to the Simaroubaceae plant family Those with very sensitive or damaged skin
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.