Is Polyester-4 safe in cosmetics?
Polyester-4 has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
Polyester-4
INCI: POLYESTER-4
Polyester-4 (CAS Not assigned in CosIng; supplier-specific) is a cosmetic cosmetic ingredient functioning as Film forming, Skin conditioning. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS Not assigned in CosIng; supplier-specific →
Auto-generated CPSR Part A draft with source citations
Function
Film forming, Skin conditioning
Safety Rating
GOOD
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Not specifically restricted by FDA; permitted under general 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 Polyester-4.
Calculate MoS for your specific formulation with the MoS Calculator.
Additional Ingredient Properties
1 property record from structured ingredient metadata.
polymer
{"ingredient_class": "film_former/texture_modifier", "polymer_type": "polyester", "chemical_backbone": "ester", "molecular_weight_Da_range": "6000-42000", "ionic_character": "nonionic", "pH_viscosity_sensitivity": "moderate", "salt_tolerance": "moderate", "electrolyte_effect_on_viscosity": "moderate", "temperature_viscosity_sensitivity": "moderate", "film_transparency": "transparent", "removabilit…
Expert Verdict
Expert safety assessment and concern-level summary for Polyester-4.
Frequently Asked Questions
Is Polyester-4 allowed in the EU?
Polyester-4 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Polyester-4 do in cosmetics?
Polyester-4 functions as: Film forming, Skin conditioning. It is classified as a cosmetic ingredient in our database. CAS number: Not assigned in CosIng; supplier-specific.
Compliance Tools
Check Polyester-4 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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Not Reported
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