Is Methoxy PEG-100 safe in cosmetics?
Methoxy PEG-100 has a safety rating of "MODERATE" in our database. EU status: permitted. US status: permitted.
Moderate
Cosmetic Ingredient
Methoxy PEG-100
INCI: METHOXY PEG-100
Methoxy PEG-100 (CAS 9004-74-4 (polyethylene glycol monomethyl ether series). "100" = ~100 EO units, avg. MW ~4,500 g/mol.) is a cosmetic cosmetic ingredient functioning as Humectant, viscosity controlling, consistency enhancer. At this molecular. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
Auto-generated CPSR Part A draft with source citations
CAS Number
9004-74-4 (polyethylene glycol monomethyl ether series). "100" = ~100 EO units, avg. MW ~4,500 g/mol.
View industrial chemical safety profile →
Function
Humectant, viscosity controlling, consistency enhancer. At this molecular weight, it is a solid waxy material.
Safety Rating
MODERATE
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Allowed. CIR has assessed PEGs and their derivatives as safe for cosmetic use.
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Methoxy PEG-100.
Calculate MoS for your specific formulation with the MoS Calculator.
Expert Verdict
Expert safety assessment and concern-level summary for Methoxy PEG-100.
Regulatory Flags
peg-ingredient
Frequently Asked Questions
Is Methoxy PEG-100 allowed in the EU?
Methoxy PEG-100 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Methoxy PEG-100 do in cosmetics?
Methoxy PEG-100 functions as: Humectant, viscosity controlling, consistency enhancer. At this molecular weight, it is a solid waxy material.. It is classified as a cosmetic ingredient in our database. CAS number: 9004-74-4 (polyethylene glycol monomethyl ether series). "100" = ~100 EO units, avg. MW ~4,500 g/mol..
Compliance Tools
Check Methoxy PEG-100 compliance across multiple jurisdictions:
Ingredient Decoder
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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