Stearoyl Leucine

INCI: STEAROYL LEUCINE

CAS Number
82338-73-4 (N-stearoyl-L-leucine)
Function
Skin conditioning agent, surfactant (mild cleansing)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Falls under CIR amino acid alkyl amides review (2017) โ€” safe when formulated to be non-irritating

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Part of the AAAA class now under heightened scrutiny for contact sensitization . Verify non-irritating formulation per CIR guidance

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Concern Level: Moderate

Regulatory Flags

potential-allergen

Frequently Asked Questions

Is Stearoyl Leucine safe in cosmetics?

Part of the AAAA class now under heightened scrutiny for contact sensitization . Verify non-irritating formulation per CIR guidance The EU classifies Stearoyl Leucine as "permitted". Safety rating: GOOD.

Is Stearoyl Leucine allowed in the EU?

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

What does Stearoyl Leucine do in cosmetics?

Stearoyl Leucine functions as: Skin conditioning agent, surfactant (mild cleansing). It is classified as a cosmetic ingredient in our database. CAS number: 82338-73-4 (N-stearoyl-L-leucine).

What is the Margin of Safety for Stearoyl Leucine?

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.

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