Is Cetyl Dimethicone safe in cosmetics?
Cetyl Dimethicone has a safety rating of "EXCELLENT" in our database. EU status: permitted. US status: permitted.
Excellent
Cosmetic Ingredient
Cetyl Dimethicone
INCI: CETYL DIMETHICONE
Cetyl Dimethicone (CAS 191044-49-2) is a cosmetic cosmetic ingredient functioning as Emollient, Skin Conditioning, TEWL Barrier, Consistency Factor. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 191044-49-2 →
Auto-generated CPSR Part A draft with source citations
Function
Emollient, Skin Conditioning, TEWL Barrier, Consistency Factor
Safety Rating
EXCELLENT
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
CIR 2003 (amended 2022) safe when formulated to be non-irritating, except insufficient data for airbrush.
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Cetyl Dimethicone.
Calculate MoS for your specific formulation with the MoS Calculator.
Additional Ingredient Properties
7 property records from structured ingredient metadata.
comedogenicity_detail
{"comedogenicity_rating": "2", "irritancy_rating": "0", "skin_type_suitability": "all,dry,combination,normal", "acne_safe": "caution", "source": "Alkyl-modified silicone"}
emulsion_hlb
{"hlb_value": "6.0", "hlb_required_as_emulsifier": "yes", "emulsifier_type": "w_o", "critical_packing_parameter": "0.50-0.65", "emulsion_stabilization_mechanism": "steric_stabilization", "co_emulsifier_pairs": "dimethicone,cyclopentasiloxane", "optimal_oil_phase_pct": "45-75", "optimal_water_phase_pct": "25-55", "electrolyte_tolerance": "low", "pH_emulsion_stability_range": "5.5-10.0", "viscosity_…
hair_conditioning
{"cas_number": "191044-49-2", "ingredient_class": "silicone_conditioner", "chemical_type": "dimethicone", "substantivity_to_hair": "excellent", "deposition_from_shampoo": "no", "deposition_from_conditioner": "yes", "conditioning_mechanism": "film_forming_emollient", "hair_penetration": "surface_only", "molecular_weight_effect_on_penetration": "alkyl_modified", "wet_combing_force_reduction_pct": "3…
polymer
{"cas_number": "24817-51-4", "ingredient_class": "conditioning/texture_modifier", "polymer_type": "silicone_based", "chemical_backbone": "other", "molecular_weight_Da_range": "3500-30000", "ionic_character": "nonionic", "pH_viscosity_sensitivity": "moderate", "salt_tolerance": "moderate", "electrolyte_effect_on_viscosity": "moderate", "temperature_viscosity_sensitivity": "moderate", "film_transpar…
sensory
{"silky": "waxy", "smooth, glides easily": "thick, rich", "dry-touch, non-greasy": "protected, smooth", "instant": "slow", "low": "high", "w/o": "w/o", "very-high": "moderate", "no": "yes", "yes": "yes", "light-diffusing": "matte", "1.40": "1.43", "transparent": "translucent", "colorless": "white", "excellent": "fair", "light": "rich", "synthetic": "synthetic"}
silicone
{"cas_number": "191044-49-2", "silicone_class": "dimethicone", "molecular_weight_Da": "4200.0", "viscosity_cSt": "450", "volatility": "non_volatile", "evaporation_rate_relative_to_D5": "0.015", "refractive_index": "1.4038", "specific_gravity": "0.97", "flash_point_C": "125.0", "surface_tension_mN_m": "20.9", "spreading_coefficient": "4.3", "film_forming_ability": "excellent", "skin_feel": "waxy", …
solubility_hlb
{"water_soluble": "no", "oil_soluble": "yes", "soluble_in": "silicones, oils", "insoluble_in": "water, glycerin, ethanol, propylene glycol", "log_p": "9.4", "appearance": "clear viscous liquid", "source": "Evonik"}
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Softener and conditioner
Expert Verdict
Expert safety assessment and concern-level summary for Cetyl Dimethicone.
Chemical Function
Softener and conditioner
Australian Status
AICIS status: listed_with_terms
Specific information requirements: An obligation to provide information applies. The obligation is: 1. A person introducing this chemical must tell us in writing within 28 calendar days if the polymer is imported or manufactured by them in a form that does not meet the polymer of low concern (PLC) criteria
Frequently Asked Questions
Is Cetyl Dimethicone allowed in the EU?
Cetyl Dimethicone EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Cetyl Dimethicone do in cosmetics?
Cetyl Dimethicone functions as: Emollient, Skin Conditioning, TEWL Barrier, Consistency Factor. It is classified as a cosmetic ingredient in our database. CAS number: 191044-49-2.
Compliance Tools
Check Cetyl Dimethicone compliance across multiple jurisdictions:
Ingredient Decoder
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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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