Polyethylene Isoterephthalate

Polyethylene Isoterephthalate 1
Polyethylene Isoterephthalate 2
AKA: PEIT, PET Polymer
Synthetic
Not Clean
Poly(oxyethyleneoxy-1,4-phthaloyl, oxyethyleneoxy-1,3-phthaloyl)
CAS #
-
Form
Powder
Functions
Bulking
Moisturizing
Strengthens Barrier
Adds volume
Traditional Use
A polyester plastic polymer synthesized in the 20th century. Previously used as a microplastic in exfoliating cosmetics before restrictions were implemented on microbeads.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Irritant
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR