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  • beauty
  • industrial

Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate

CAS 27924-99-8

Also registered as 1 other CAS number

58128-22-6

Concern score

Not assessed — no hazard data yet.

Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate in plain language

What it is

On cosmetic ingredient lists it appears as “Polyhydroxystearic acid”.

Also known as Polyhydroxystearic acid · Polyhydroxystearic acid stearate · 12-HYDROXYSTEARIC acid homopolymer octadecanoate · POLY(12-HYDROXYSTEARIC acid) stearate · Stearoyl polyhydroxystearic acid

What it does

Used in cosmetics as an emulsifier.

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

Regulation

No restrictions found. Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUCosIngActive12-Hydroxyoctadecanoic acid, homopolymer
    • 12-Hydroxyoctadecanoic acid, homopolymerSource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.
    • EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as concept.
    • openFDA substance registry classifies this ingredient as concept.Source →

Expert safety opinions

No expert opinion on file for Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate. 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 Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →

  • EPA Chemical and Products Database

    exposure · updated January 7, 2008

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →
Reference links (1)

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.

Where it has been recorded

How often EPA CPDat has listed Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate in a product composition. These are source records, not Greenveil catalog products.

Named organisations

1

Typical roles

Emulsifying
See products using Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate →

Catalog

Found in these products

Cosmetic and personal-care products that list Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate are shown first. Their ingredient lists include Octadecanoic acid, 12-hydroxy-, homopolymer, octadecanoate; each product's own rating depends on its whole formula, so it is shown on the product page, not here.

See all 161 →Find products without it →