The Lab
Specimen No. 0170
CautionSyntheticcolorantdye

Red 40 / Allura Red AC

red 40 · fd&c red 40 · e129

A synthetic azo dye (the most widely used food dye in the US) derived from petroleum. FDA-approved but banned in several European countries. Contains p-Cresidine, listed as reasonably anticipated to be a human carcinogen by the US HHS. Studies link it to hyperactivity in children, and the EU mandates a warning label.

high confidence
Researched April 18, 2026
Red 40 / Allura Red AC molecular structure
Specimen 0170Red 40 / Allura Red AC

Concerns

  • Contains p-Cresidine — a reasonably anticipated human carcinogen (HHS NTP)
  • Linked to hyperactivity and ADHD-like behavior in children
  • EU requires warning label: "May have adverse effect on activity and attention in children"
  • Banned in Denmark, Belgium, France, and Switzerland

Regulatory flags

  • ⚑EU requires behavioral warning label on food products containing this dye

Commonly found in

CandyBeveragesBaked goodsGelatinCerealProcessed snacks

Last researched: April 18, 2026

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.

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