The Lab
Specimen No. 0179
AvoidSyntheticfood packaging contaminants

Styrene

from polystyrene containers

A compound that can migrate from polystyrene cups and containers into hot or fatty foods. IARC classifies it as a Group 2A probable carcinogen.

low confidence
Researched July 7, 2026

Concerns

  • IARC Group 2A probable carcinogen; can leach into hot and fatty foods from polystyrene

Regulatory flags

  • IARC Class: Gr2A
  • EDC Status: None
  • Regulatory: US: FDA permits food contact; EU: phasing out
  • Evidence Grade: B

Commonly found in

Hot foods in polystyrene cups, coffee containers

Research disclaimer: This rating is based on available peer-reviewed research and regulatory assessments at the time of publication. It is not medical advice. Consult a qualified professional for personal health or skin concerns.

Check another ingredient

Search our database of scored cosmetic, food, and household ingredients — or scan a full product label.

Open the Ingredient Lab

Embed this verdict

LabelCleared verdict badge: Styrene — Avoid
<a href="https://labelcleared.com/lab/styrene"><img src="https://labelcleared.com/embed/styrene/badge.svg" alt="LabelCleared verdict badge: Styrene — Avoid" height="34"></a>