Good Cosmetic Ingredient NOAEL Data GHS Classified

Kaolin

INCI: KAOLIN

CAS Number
1332-58-7
Function
absorbent, opacifier, viscosity-increasing, bulking
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes FDA OTC Skin Protectant active ingredient (Monograph M016, 21 CFR 347.10) at 4-20%. Also approved as anorectal protectant (21 CFR 346.14). GRAS as indirect food additive for food-contact paper/paperboard (21 CFR 186.1256). Not classified as sunscreen active.

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

6 study endpoints found for Kaolin. 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 ca.2500 mg/kg bw/day oral code:3544 oral REACH
NOAEL >5000 mg/kg bw/day oral rat oral REACH
NOAEL 10000 mg/kg bw/day oral code:3544 oral REACH
NOAEL 1760 other oral rat oral REACH
NOAEL 5270 other oral mouse oral REACH
NOAEL 8980 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.

Hazard Statements
No hazard classification according to GHS criteria
Short-term Exposure Effects
May cause mechanical irritation.
Long-term Exposure Effects
Lungs may be affected by repeated or prolongated exposure to dust particles. This may result in fibrosis (kaolinosis).
Routes of Exposure
Exposure mainly occurs via inhalation.

Expert Verdict

Kaolin is concluded safe in cosmetics in present practices of use and concentration up to 53.2% with negligible dermal absorption confirmed via Franz diffusion cells. Cosmetic-grade Kaolin must contain less than 2% crystalline silica. Nanoparticle forms require separate safety assessment.

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Concern Level: Low

Regulatory Flags

eu-unrestricted cir-approved no-sccs-opinion natural-origin epa_safer_alternative

Frequently Asked Questions

Is Kaolin safe in cosmetics?

Kaolin is concluded safe in cosmetics in present practices of use and concentration up to 53.2% with negligible dermal absorption confirmed via Franz diffusion cells. Cosmetic-grade Kaolin must contain less than 2% crystalline silica. Nanoparticle forms require separate safety assessment. The EU classifies Kaolin as "permitted". Safety rating: GOOD. 6 toxicological study endpoint(s) are available in our database.

Is Kaolin allowed in the EU?

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

What does Kaolin do in cosmetics?

Kaolin functions as: absorbent, opacifier, viscosity-increasing, bulking. It is classified as a cosmetic ingredient in our database. CAS number: 1332-58-7.

What is the Margin of Safety for Kaolin?

not established 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 Kaolin?

The NOAEL (No Observed Adverse Effect Level) for Kaolin is ca.2500 mg/kg bw/day based on a oral study via oral route in code:3544. A total of 6 study endpoints are available. Source: REACH.

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