What does Castoryl maleate do?

Used in cosmetics as a skin-conditioning agent. Castoryl Maleate is a modified castor oil in which some of the unsaturation has been converted to a cyclic dicarboxylic acid.

Is Castoryl maleate safe?

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

beauty
industrial

Castoryl maleate

CAS 241153-84-4

Concern score

Not assessed — no hazard data yet.

Castoryl maleate in plain language

What it is: Also known as Monomaleate castor oil · Ceraphyl rmt
What it does: Used in cosmetics as a skin-conditioning agent. Castoryl Maleate is a modified castor oil in which some of the unsaturation has been converted to a cyclic dicarboxylic acid.
Skin conditioning
Conditioner
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. Castoryl maleate appears in these published regulatory listings.

Recorded in these product areas

Found in consumer products
Industrial

EUCosIngActiveCastoryl Maleate is a modified castor oil in which some of the unsaturation has been converted to a cyclic dicarboxylic acid
- Castoryl Maleate is a modified castor oil in which some of the unsaturation has been converted to a cyclic dicarboxylic acidSource →
USEPAcommercial use observedEPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Softener and conditioner.
- EPA CPDat observed this chemical in 0 composition records across product categories including unclassified products. EPA CPDat classifies this chemical for functional uses including Softener and conditioner.Source →
USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as structurallydiverse.
- openFDA substance registry classifies this ingredient as structurallydiverse.Source →

Expert safety opinions

No expert opinion on file for Castoryl maleate. 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 Castoryl maleate 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 2019-12-20
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 →

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 Castoryl maleate in a product composition. These are source records, not Greenveil catalog products.

Named organisations

Typical roles

Skin conditioningConditioner

See products using Castoryl maleate →

Catalog

Found in these products

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

See all 10 →Find products without it →