Polybutylene Terephthalate

INCI: POLYBUTYLENE TEREPHTHALATE

CAS Number
26062-94-2
Function
Film forming, viscosity controlling, hair fixative
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes CIR concluded safe as used; FDA approved for food-contact packaging under 21 CFR 177.1660

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Permitted cosmetic ingredient with good safety profile. Subject to EU REACH microplastics restriction (2023/2055) with phased bans from 2023-2035 for particulate forms, making it a critical reformulation target.

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Concern Level: Moderate

Regulatory Flags

Environmental

Frequently Asked Questions

Is Polybutylene Terephthalate safe in cosmetics?

Permitted cosmetic ingredient with good safety profile. Subject to EU REACH microplastics restriction (2023/2055) with phased bans from 2023-2035 for particulate forms, making it a critical reformulation target. The EU classifies Polybutylene Terephthalate as "restricted". Safety rating: GOOD.

Is Polybutylene Terephthalate allowed in the EU?

Polybutylene Terephthalate EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.

What does Polybutylene Terephthalate do in cosmetics?

Polybutylene Terephthalate functions as: Film forming, viscosity controlling, hair fixative. It is classified as a cosmetic ingredient in our database. CAS number: 26062-94-2.

What is the Margin of Safety for Polybutylene Terephthalate?

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.

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