Steareth-100

INCI: STEARETH-100

CAS Number
9005-00-9
Function
Gel forming, surfactant (cleansing), solubilizer, auxiliary O/W emulsifier
Safety Rating
EXCELLENT

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Not restricted; CIR reviewed steareth family โ€” safe as used

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

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

1,4-Dioxane / ethylene oxide residual concern (standard for all PEG ethers โ€” higher ethoxylation may mean more residual EO processing needed); commonly used in hair colorant systems as wash-out component

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Concern Level: None

Regulatory Flags

eu_children_restricted epa_safer_alternative

Frequently Asked Questions

Is Steareth-100 safe in cosmetics?

1,4-Dioxane / ethylene oxide residual concern (standard for all PEG ethers โ€” higher ethoxylation may mean more residual EO processing needed); commonly used in hair colorant systems as wash-out component The EU classifies Steareth-100 as "permitted". Safety rating: EXCELLENT.

Is Steareth-100 allowed in the EU?

Steareth-100 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Steareth-100 do in cosmetics?

Steareth-100 functions as: Gel forming, surfactant (cleansing), solubilizer, auxiliary O/W emulsifier. It is classified as a cosmetic ingredient in our database. CAS number: 9005-00-9.

What is the Margin of Safety for Steareth-100?

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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