Poor Cosmetic Ingredient GHS Classified

Styrene Oxide

INCI: STYRENE OXIDE (NOT AN ESTABLISHED INCI INGREDIENT)

CAS Number
96-09-3
Function
No legitimate cosmetic function — industrial chemical intermediate
Safety Rating
POOR

Regulatory Status

🇪🇺 EU Status prohibited
🇺🇸 US Status permitted
US Notes Not approved for cosmetic use. Classified as a hazardous substance

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
high
Sensitization
high

Calculate MoS for your specific formulation with the MoS Calculator.

GHS Hazard Classification

Globally Harmonized System classification per ECHA C&L inventory and ILO/WHO International Chemical Safety Cards.

Signal Word
DANGER
Pictograms
excl mark;warn; cancer;health haz
Hazard Statements
Combustible liquid Harmful if swallowed Causes skin irritation Causes eye irritation Suspected of causing genetic defects May cause cancer
Short-term Exposure Effects
The substance is irritating to the eyes and skin. The substance may cause effects on the central nervous system. Exposure could cause lowering of consciousness.
Long-term Exposure Effects
This substance is probably carcinogenic to humans.
Routes of Exposure
The substance can be absorbed into the body by inhalation, through the skin and by ingestion.

Expert Verdict

🔴 BANNED in EU cosmetics. Carcinogen/mutagen. Highly reactive epoxide. Must never appear in cosmetic formulations. If detected as impurity, batch must be rejected

⚠️
Concern Level: High

Regulatory Flags

endocrine_disruptor prop65 eu_banned_cosmetics ifra_fragrance eu_cosing_listed

Frequently Asked Questions

Is Styrene Oxide safe in cosmetics?

🔴 BANNED in EU cosmetics. Carcinogen/mutagen. Highly reactive epoxide. Must never appear in cosmetic formulations. If detected as impurity, batch must be rejected The EU classifies Styrene Oxide as "prohibited". Safety rating: POOR.

Is Styrene Oxide allowed in the EU?

Styrene Oxide EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Styrene Oxide do in cosmetics?

Styrene Oxide functions as: No legitimate cosmetic function — industrial chemical intermediate. It is classified as a cosmetic ingredient in our database. CAS number: 96-09-3.

What is the Margin of Safety for Styrene Oxide?

not established 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.

Is Styrene Oxide classified as hazardous under GHS?

Styrene Oxide carries a GHS signal word of "DANGER". Hazard statements: Combustible liquid Harmful if swallowed Causes skin irritation Causes eye irritation Suspected of causing genetic defects May cause cancer. This classification is based on the ILO/WHO International Chemical Safety Card and ECHA C&L inventory data. Note: GHS classification applies to the pure substance — at cosmetic use concentrations, hazard thresholds may not be met.

Compliance Tools

Check Styrene Oxide compliance across multiple jurisdictions:

🔬
Ingredient Decoder
Paste a full ingredient list for instant analysis
 🌸
82 Allergen Checker
Check for EU declarable fragrance allergens
 🧪
Substance Compliance
Check compliance across 55 jurisdictions
 🧮
MoS Calculator
Calculate Margin of Safety using SCCS methodology
 ⚗️
Heavy Metal Limits
Compare limits across jurisdictions

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