Ingredient review
Stenoloma Chusanum Extract
INCI: Stenoloma Chusanum Leaf/Stem Extract
A gentle fern extract with antioxidant potential, but research is limited and mostly traditional.
In plain English
Stenoloma chusanum is a type of fern (sometimes called spleenwort) used in traditional herbal practices. In skincare, the leaf and stem extract is added for its antioxidant content, which may help protect skin from environmental stress. It is considered very gentle and unlikely to cause irritation, but there is not yet strong scientific evidence for specific skin benefits.
Review score
Safety, usefulness, and evidence
Potentially useful with some tradeoffs
The evidence base is still emerging, so marketing claims deserve extra caution.
Risk flags are low for most users, though the finished product can still irritate.
- Source
- natural
- Evidence
- emerging
- Irritation
- low
- Clogging risk
- low
Quick decision guide
Useful, but context matters
Stenoloma Chusanum 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 Stenoloma Chusanum 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
Stenoloma Chusanum Leaf/Stem Extract is a botanical ingredient derived from the leaves and stems of the Stenoloma chusanum fern. It is typically obtained via solvent extraction and contains various plant compounds such as flavonoids and phenolic acids.
How it works
The extract provides antioxidant activity by donating electrons to neutralize free radicals, which are unstable molecules that can damage skin cells. It may also have mild soothing effects by calming minor surface irritation, though the exact mechanisms are not fully characterized in cosmetic science.
Pros
Gentle on skin
The extract has a very low irritation and comedogenic risk, making it suitable for sensitive and acne-prone skin types.
Antioxidant support
It provides a source of natural antioxidants that can help protect skin from daily environmental damage like pollution and UV exposure.
Cons and cautions
Limited research
There are few peer-reviewed studies on this specific extract for cosmetic use, so its benefits are less established compared to more common botanicals.
Variable quality
As a natural extract, its potency and composition can vary between batches and suppliers, which may affect product consistency.
Best for
- Anyone looking for a gentle, natural antioxidant ingredient
- Those with sensitive or reactive skin seeking mild soothing options
Use caution if
- Individuals with known allergies to ferns or related plants (rare)
Usage tips
Safety summary
Stenoloma Chusanum Leaf/Stem Extract is considered safe for topical cosmetic use with a very low risk of irritation or allergy. As with any botanical, patch testing is advised for those with sensitive skin or plant allergies.
Research notes
Current evidence is primarily based on traditional use and preliminary in vitro studies showing antioxidant activity. There are no large-scale human clinical trials specifically evaluating this extract for skin benefits.
Common label clues
- Typical concentration
- Typically 0.1% to 2% in leave-on products
- Regulatory status
- Generally recognized as safe for cosmetic use in the EU and US when used according to good manufacturing practices. Not a regulated drug ingredient.
- Common uses
- Serums, Moisturizers, Toner
- Environmental note
- The fern is typically wild-harvested or cultivated in parts of Asia. Sustainable sourcing practices are recommended to avoid overharvesting.
Good to know
- Stenoloma chusanum is also known as spleenwort fern and has a history of use in traditional Asian herbal medicine.
- This extract is often used in combination with other botanicals in 'fermented' or 'herbal' skincare lines.
Common questions
What is Stenoloma Chusanum Extract in beauty products?
Stenoloma chusanum is a type of fern (sometimes called spleenwort) used in traditional herbal practices. In skincare, the leaf and stem extract is added for its antioxidant content, which may help protect skin from environmental stress. It is considered very gentle and unlikely to cause irritation, but there is not yet strong scientific evidence for specific skin benefits.
What does Stenoloma Chusanum Extract do in a beauty product?
The extract provides antioxidant activity by donating electrons to neutralize free radicals, which are unstable molecules that can damage skin cells. It may also have mild soothing effects by calming minor surface irritation, though the exact mechanisms are not fully characterized in cosmetic science.
Is Stenoloma Chusanum Extract safe for most people?
Stenoloma Chusanum Leaf/Stem Extract is considered safe for topical cosmetic use with a very low risk of irritation or allergy. As with any botanical, patch testing is advised for those with sensitive skin or plant allergies.
Who should be careful with Stenoloma Chusanum Extract?
Individuals with known allergies to ferns or related plants (rare)
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.