FAST GREEN FCF

Other

30

Caution

CAS Number: 2353-45-9

About FAST GREEN FCF

A synthetic green dye used in hair colouring — banned as a hair dye ingredient in the EU due to mutagenicity concerns. Not one you want lingering on your scalp.

Detailed Analysis

Fast Green FCF (CI 42053, CAS 2353-45-9) is a triphenylmethane dye with the formula C₃₇H₃₄N₂Na₂O₁₀S₃. Listed on EU Annex II/1357 as banned when used as a substance in hair dye products. GHS hazard codes include H341 (suspected of causing genetic defects — germ cell mutagenicity), H315 (skin irritation), H319 (eye irritation), H335 (respiratory irritation), and H412 (harmful to aquatic life). While approved as a food colour (FD&C Green No. 3) in some jurisdictions at low concentrations, its mutagenicity flag makes it a significant concern for cosmetic use on skin/scalp.

What It Does

HAIR DYEING

Known Concerns

  • ⚠ Suspected of causing genetic defects (H341 — germ cell mutagenicity)
  • ⚠ EU banned as hair dye ingredient (Annex II/1357)
  • ⚠ Skin and eye irritant
  • ⚠ Respiratory irritation risk
  • ⚠ Harmful to aquatic life with long lasting effects

Safety Score

30

Caution

Based on EU regulatory data, published safety research, and ingredient function analysis.

References

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EU CosIng Database

European Commission cosmetic ingredient registry

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This information is for educational purposes only and does not constitute medical advice. Always consult a healthcare professional for skin concerns or allergies.