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Polygonum cuspidatum extract

Concern score

Not assessed — no hazard data yet.

Polygonum cuspidatum extract in plain language

What it does

Used in cosmetics as a skin-conditioning agent. Polygonum Cuspidatum Extract is an extract of the whole plant of the Japanese Knotweed, Polygonum cuspidatum, Polygonaceae.

  • 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

Canonical ingredient record built from 1 public-source records.

Regulation

No restrictions found. Polygonum cuspidatum extract appears in these published regulatory listings.

  • EUCosIngActivePolygonum Cuspidatum Extract is an extract of the whole plant of the Japanese Knotweed, Polygonum cuspidatum, Polygonaceae
    • Polygonum Cuspidatum Extract is an extract of the whole plant of the Japanese Knotweed, Polygonum cuspidatum, PolygonaceaeSource →

Expert safety opinions

No expert opinion on file for Polygonum cuspidatum extract. 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 Polygonum cuspidatum extract yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

1 data source

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

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.

Catalog

Found in these products

Their ingredient lists include Polygonum cuspidatum extract; each product's own rating depends on its whole formula, so it is shown on the product page, not here.