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Castanea crenata shell

Concern score

Not assessed — no hazard data yet.

Castanea crenata shell in plain language

What it is

On cosmetic ingredient lists it appears as “Castanea crenata shell extract”.

Also known as Castanea crenata shell extract · Castanea crenata (chestnut) shell extract · Castanea castanea var. pubinervis shell · Castanea chinensis shell · Castanea japonica shell · Castanea kusakuri shell

Show all 12 names

Castanea pubinervis shell · Castanea sativa var. pubinervis shell · Castanea stricta shell · Japanese chestnut shell · Kuri shell · Ri ben li

What it does

Used in cosmetics as a skin-conditioning agent. Castanea Crenata Shell Extract is an extract of the shell of the chestnut, Castanea crenata, Fagaceae.

  • Skin conditioning
Is it a concern?
We haven't assessed a concern score for this ingredient yet. It is listed for cosmetic use in the EU.

What we know about this ingredient

FDA GSRS classifies this ingredient as ingredient substance structurallydiverse.

Regulation

No restrictions found. Castanea crenata shell appears in these published regulatory listings.

  • USFDAlisted in openFDA substance2 entries
    • openFDA substance registry classifies this ingredient as concept.Source →
    • openFDA substance registry classifies this ingredient as structurallydiverse.Source →
  • EUCosIngActiveCastanea Crenata Shell Extract is an extract of the shell of the chestnut, Castanea crenata, Fagaceae
    • Castanea Crenata Shell Extract is an extract of the shell of the chestnut, Castanea crenata, FagaceaeSource →

Expert safety opinions

No expert opinion on file for Castanea crenata shell. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

Evidence & sources

No graded research studies for Castanea crenata shell yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

3 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →

Allergen profile

Canonical allergen markers detected on this ingredient. Each row is derived from the ingredient’s name or synonyms matching a known allergen class — useful when scanning a label for a specific allergy context.

  • Tree nutsContains · Oral (ingested)

    Source: chemindex_name_match

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.