Excellent Emollient NOAEL Data GHS Classified

Castor Oil

INCI: RICINUS COMMUNIS SEED OIL

CAS Number
8001-79-4
Function
Sealing oil; viscous emollient; ricinoleic acid carrier; scalp-oil treatment; moisture-locking hair treatment
Safety Rating
EXCELLENT

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes FDA permits castor oil as a direct food additive (flavoring agent) and indirect food additive. CIR Expert Panel final safety conclusion issued 2007, re-reviewed and reaffirmed August 2024 covering both rinse-off and leave-on applications including lip products at up to 81% concentration.

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

10 study endpoints found for Castor Oil. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.

Endpoint Value Route Species Study Type Source
NOAEL 3045 mg/kg bw/day oral rat Subchronic COSMOS_DB
NOAEL 7823 mg/kg bw/day oral mouse Subchronic COSMOS_DB
NOAEL 12840 mg/kg bw/day oral rat Special Toxicology Study COSMOS_DB
NOAEL 12840 mg/kg bw/day oral rat Special Toxicology Study COSMOS_DB
NOAEL 11329 mg/kg bw/day oral rat Special Toxicology Study COSMOS_DB
NOAEL 10 other oral rat oral REACH
NOAEL 10 other oral mouse oral REACH
NOAEL >=15 other oral rat oral REACH
NOAEL 200000 mg/kg bw/day oral rat oral REACH
NOAEL 1000 mg/kg bw/day oral rat oral REACH

GHS Hazard Classification

Globally Harmonized System classification per ECHA C&L inventory and ILO/WHO International Chemical Safety Cards.

Short-term Exposure Effects
The substance is irritating to the gastrointestinal tract.
Long-term Exposure Effects
Repeated or prolonged contact with skin may cause dermatitis.

Expert Verdict

Castor oil (CAS 8001-79-4) is not listed in EU Regulation EC 1223/2009 Annexes II-VI and is freely permitted with no concentration restrictions. The CIR Expert Panel concluded it safe at all reported use concentrations including up to 81% in lip products, with reaffirmation in August 2024. FDA-approved as a food additive.

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Concern Level: Low

Regulatory Flags

penetration-enhancer widely-used food-grade cir-reviewed-2024 no-concentration-cap epa_safer_alternative ifra_fragrance fda_food_additive

Frequently Asked Questions

Is Castor Oil safe in cosmetics?

Castor oil (CAS 8001-79-4) is not listed in EU Regulation EC 1223/2009 Annexes II-VI and is freely permitted with no concentration restrictions. The CIR Expert Panel concluded it safe at all reported use concentrations including up to 81% in lip products, with reaffirmation in August 2024. FDA-approved as a food additive. The EU classifies Castor Oil as "permitted". Safety rating: EXCELLENT. 10 toxicological study endpoint(s) are available in our database.

Is Castor Oil allowed in the EU?

Castor Oil EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Castor Oil do in cosmetics?

Castor Oil functions as: Sealing oil; viscous emollient; ricinoleic acid carrier; scalp-oil treatment; moisture-locking hair treatment. It is classified as a Emollient in our database. CAS number: 8001-79-4.

What is the Margin of Safety for Castor Oil?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

What is the NOAEL for Castor Oil?

The NOAEL (No Observed Adverse Effect Level) for Castor Oil is 3045 mg/kg bw/day based on a Subchronic study via oral route in rat. A total of 10 study endpoints are available. Source: COSMOS_DB.

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