Is Cerium Oxide safe in cosmetics?
Cerium Oxide has a safety rating of "MODERATE" in our database. EU status: permitted. US status: permitted.
Moderate
Cosmetic Ingredient
Cerium Oxide
Also known as: Cerium oxide (CeO2), EINECS 215-150-4, Molycomp 5310, Needlal U15, Needlal W10-01 (+6 more)
INCI: CERIUM OXIDE
Cerium Oxide (CAS 1306-38-3) is a cosmetic cosmetic ingredient functioning as Skin Protecting, Bulking Agent. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
View industrial chemical safety profile for CAS 1306-38-3 →
Auto-generated CPSR Part A draft with source citations
Cross-Vertical Regulatory Divergence
Cerium Oxide is classified GHS Danger (H371, H372) in the chemicals database but is allowed in EU cosmetics.
Source: Cosmetics: ingredients.eu_status; Chemicals: ghs_classifications.signal_word/hazard_statement_code
Function
Skin Protecting, Bulking Agent
Safety Rating
MODERATE
Chemistry & Identifiers
IUPAC Name
dioxocerium
InChIKey
CETPSERCERDGAM-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Not approved as active sunscreen ingredient; permitted as cosmetic inert/colorant ingredient
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Cerium Oxide.
Calculate MoS for your specific formulation with the MoS Calculator.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
1,000 - 10,000 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Additional Ingredient Properties
2 property records from structured ingredient metadata.
anti_pollution
{"cas_number": "1306-38-3", "ingredient_class": "blue_light_filter", "primary_mechanism": "free_radical_scavenging", "pollution_types_targeted": "blue_light_HEV/UV_A", "IR_A_protection": "no", "visible_light_protection": "no", "digital_screen_protection_claim": "no", "PAH_neutralization": "no", "ozone_protection": "no", "mitochondrial_protection": "no", "Nrf2_activation": "no", "AhR_pathway_modula…
mineral_clay
{"cas_number": "1306-38-3", "ingredient_class": "other", "chemical_formula": "CeO2", "mineral_origin": "synthetic", "particle_size_range_um": "0.05-1.0", "surface_area_m2_per_g": "30-100", "crystal_structure": "cubic", "color_appearance": "white/cream", "opacity": "opaque", "refractive_index": "2.2", "oil_absorption_g_per_100g": "15-30", "water_absorption_capacity": "low", "surface_charge_at_pH_7"…
Function Categories & List Membership
Cosmetic/Chemical Function Categories
UV stabilizer
Expert Verdict
Expert safety assessment and concern-level summary for Cerium Oxide.
Known Synonyms
Cerium oxide (CeO2)
EINECS 215-150-4
Molycomp 5310
Needlal U15
Needlal W10-01
Needlal W15
Nidoral
UNII-619G5K328Y
CeO2
ceric dioxide
cerium(IV)dioxide
Chemical Function
UV stabilizer
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Cerium Oxide allowed in the EU?
Cerium Oxide EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Cerium Oxide do in cosmetics?
Cerium Oxide functions as: Skin Protecting, Bulking Agent. It is classified as a cosmetic ingredient in our database. CAS number: 1306-38-3.
Is Cerium Oxide used outside cosmetics?
Cerium Oxide also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Does Cerium Oxide have different safety status in cosmetics vs industrial chemicals?
Cerium Oxide is classified GHS Danger (H371, H372) in the chemicals database but is allowed in EU cosmetics.
Compliance Tools
Check Cerium 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 multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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