Steareth-4 Stearate

INCI: STEARETH-4 STEARATE

CAS Number
No unique CAS widely published; ester of Steareth-4 and stearic acid
Function
Skin conditioning agent; surfactant – emulsifying agent (ester-type co-emulsifier)
Safety Rating
GOOD

Regulatory Status

🇪🇺 EU Status permitted
🇺🇸 US Status permitted
US Notes Permitted; falls under CIR alkyl PEG ether group review — 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
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

1,4-Dioxane from ethoxylation; limited stand-alone toxicological data (read-across dependent)

⚠️
Concern Level: Moderate

Frequently Asked Questions

Is Steareth-4 Stearate safe in cosmetics?

1,4-Dioxane from ethoxylation; limited stand-alone toxicological data (read-across dependent) The EU classifies Steareth-4 Stearate as "permitted". Safety rating: GOOD.

Is Steareth-4 Stearate allowed in the EU?

Steareth-4 Stearate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Steareth-4 Stearate do in cosmetics?

Steareth-4 Stearate functions as: Skin conditioning agent; surfactant – emulsifying agent (ester-type co-emulsifier). It is classified as a cosmetic ingredient in our database. CAS number: No unique CAS widely published; ester of Steareth-4 and stearic acid.

What is the Margin of Safety for Steareth-4 Stearate?

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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