Is Dimethicone Copolyol safe in cosmetics?
Dimethicone Copolyol has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Emulsifier
Dimethicone Copolyol
INCI: DIMETHICONE COPOLYOL
Dimethicone Copolyol (CAS 64365-23-7) is a cosmetic emulsifier functioning as Emulsifier; conditioning agent; W/Si and Si/W emulsion stabilizer. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 64365-23-7 →
Auto-generated CPSR Part A draft with source citations
Function
Emulsifier; conditioning agent; W/Si and Si/W emulsion stabilizer
Safety Rating
GOOD
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
FDA regulation under MoCRA does not restrict this ingredient specifically. CIR assessed dimethicone-based ingredients as safe.
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Dimethicone Copolyol.
Calculate MoS for your specific formulation with the MoS Calculator.
Additional Ingredient Properties
7 property records from structured ingredient metadata.
comedogenicity_detail
{"comedogenicity_rating": "1", "irritancy_rating": "0", "skin_type_suitability": "all,combination,normal", "acne_safe": "yes", "source": "Silicone emollient"}
ecotoxicity
{"biodegradable": "no", "biodegradation_days": "1200+", "bioaccumulative": "yes", "aquatic_toxicity_level": "low", "coral_reef_safe": "unknown", "marine_toxicity": "low acute toxicity", "freshwater_toxicity": "very persistent", "soil_toxicity": "sediment accumulation", "endocrine_disruptor": "no", "persistent_organic_pollutant": "yes", "microplastic": "no", "nano_particle": "no", "hawaii_banned": …
emulsion_hlb
{"hlb_value": "8.0", "hlb_required_as_emulsifier": "yes", "emulsifier_type": "w_o", "critical_packing_parameter": "0.45-0.60", "emulsion_stabilization_mechanism": "steric_stabilization", "co_emulsifier_pairs": "cyclopentasiloxane,dimethicone", "optimal_oil_phase_pct": "40-70", "optimal_water_phase_pct": "30-60", "electrolyte_tolerance": "low", "pH_emulsion_stability_range": "5.0-9.5", "viscosity_b…
hair_care
{"hair_function": "conditioning", "hair_type_suitability": "all", "curl_pattern_suitability": "all", "porosity_suitability": "all", "protein_sensitivity": "neutral", "moisture_protein_balance": "yes", "cg_method_approved": "water-soluble", "silicone_type": "not-a-sulfate", "sulfate_type": "no", "drying_alcohol": "no", "fatty_alcohol": "yes", "heat_protectant": "yes", "color_safe": "neutral", "kera…
hair_conditioning
{"cas_number": "68937-54-2", "ingredient_class": "silicone_conditioner", "chemical_type": "dimethicone", "substantivity_to_hair": "good", "deposition_from_shampoo": "yes", "deposition_from_conditioner": "yes", "conditioning_mechanism": "film_forming_emulsifying", "hair_penetration": "surface_only", "molecular_weight_effect_on_penetration": "water_soluble_silicone", "wet_combing_force_reduction_pct…
ph_stability
{"optimal_ph_min": "3.0", "optimal_ph_max": "10.0", "stable_ph_min": "3.0", "stable_ph_max": "11.0", "ph_dependent_function": "Water-soluble silicone", "formulation_note": "Emollient", "source": "Formulation literature"}
silicone
{"cas_number": "64365-23-7", "silicone_class": "dimethicone", "molecular_weight_Da": "2800.0", "viscosity_cSt": "200", "volatility": "non_volatile", "evaporation_rate_relative_to_D5": "0.016", "refractive_index": "1.408", "specific_gravity": "1.055", "flash_point_C": "118.0", "surface_tension_mN_m": "24.3", "spreading_coefficient": "2.8", "film_forming_ability": "good", "skin_feel": "silky", "slip…
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Defoamer
Expert Verdict
Expert safety assessment and concern-level summary for Dimethicone Copolyol.
Regulatory Flags
ethoxylated
silicone
peg-modified
not-cosmos-approved
1,4-dioxane-risk
Chemical Function
Defoamer
Regulatory Lists
inert_ingredient; non_food_use; Pesticides
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Dimethicone Copolyol allowed in the EU?
Dimethicone Copolyol EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Dimethicone Copolyol do in cosmetics?
Dimethicone Copolyol functions as: Emulsifier; conditioning agent; W/Si and Si/W emulsion stabilizer. It is classified as a Emulsifier in our database. CAS number: 64365-23-7.
Compliance Tools
Check Dimethicone Copolyol compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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