The Lab
Specimen No. 0017
AvoidSyntheticcolorantdye

Coal Tar Dyes

fd&c red 4 · fd&c yellow 5 · fd&c blue 1

Synthetic dyes derived from coal tar. Several are restricted or banned in the EU and Canada. Associated with carcinogenicity and skin sensitization.

high confidence
Researched April 18, 2026

Concerns

  • Several IARC-classified carcinogens within this group
  • Skin sensitization and allergic reactions
  • EU restricts many — notably in hair dyes
  • p-Phenylenediamine (PPD) is a known potent allergen

Regulatory flags

  • EU banned most coal tar dyes in cosmetics
  • Many coal tar components: IARC Group 1 carcinogens

Commonly found in

Hair dyeLipstickEyeshadowMascaraDandruff shampoo (therapeutic grade)

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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