Sodium Myristyl Sulfate

INCI: SODIUM MYRISTYL SULFATE

CAS Number
1191-50-0
Function
Cleansing, Surfactant – Cleansing, Surfactant – Emulsifying
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted; related to SLS/sodium lauryl sulfate class; CIR-reviewed as part of alkyl sulfate group

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Strong anionic surfactant — significant irritation potential at higher concentrations; may enhance penetration of other ingredients; similar defatting and protein denaturation concerns as SLS; use with co-surfactants to mitigate irritancy

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Concern Level: Moderate

Frequently Asked Questions

Is Sodium Myristyl Sulfate safe in cosmetics?

Strong anionic surfactant — significant irritation potential at higher concentrations; may enhance penetration of other ingredients; similar defatting and protein denaturation concerns as SLS; use with co-surfactants to mitigate irritancy The EU classifies Sodium Myristyl Sulfate as "permitted". Safety rating: MODERATE.

Is Sodium Myristyl Sulfate allowed in the EU?

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

What does Sodium Myristyl Sulfate do in cosmetics?

Sodium Myristyl Sulfate functions as: Cleansing, Surfactant – Cleansing, Surfactant – Emulsifying. It is classified as a cosmetic ingredient in our database. CAS number: 1191-50-0.

What is the Margin of Safety for Sodium Myristyl Sulfate?

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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