Alizarin

Alizarin in plain language

What it is

On cosmetic ingredient lists it appears as “CI 58000”.

Also known as CI 58000 · CI 58000 / pigment red 83 · Pigment red 83 · 1,2-Dihydroxyanthraquinone · 1,2-Dihydroxyanthracene-9,10-dione · C.I. 58000

Show all 32 names

D&C orange no. 15 (delisted) · 1,2-Anthraquinonediol · 1,2-Dihydroxy-9,10-anthracenedione · 1,2-Dihydroxy-9,10-anthraquinone · 1,2-Dihydroxyanthrachinon · 1,2-Dihydroxyanthraquinone (CI 58000) · 1,2-Dihydroxyanthraquinone; Alizarin · 1,2-dihidroxiantraquinona · 9,10-Anthracenedione, 1,2-dihydroxy- · Alizarine · Acid Metachrome Red B · Alizarin B · Alizarina · Alizarine 3B · Alizarine B · Alizarine NAC · Alizarine Red · Alizarine Red B · Alizarine Red L · Alizerine NAC · Eljon Madder · Eljon Madder M · Mordant Red 11 · Rouge covalac w 3514 · Turkey Red · Alizarine L paste

What it does

Used in cosmetics as a colourant and a hair dye. CI 58000 is classed chemically as an anthraquinone colour.

• Colorant
• Hair dyeing
• Colourant

Is it a concern?

Critical concern: no hazard classifications on record. It is banned in EU cosmetics.

Why it's flagged

1,2-Dihydroxyanthraquinone (Pigment Red 83; CI 58000) when used as a substance in hair dye products is prohibited in cosmetic products under Annex II of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — banned

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

• EU Annex II — prohibited
• EU Annex IV — permitted colorant
• EU permitted colorant
• EU prohibited in cosmetics

• EU·EC

  Annex II of EU Cosmetics Regulation (EC) 1223/2009: substances prohibited in cosmetic products.

  banned
  View source →

• EU·CosIng·Active4 entries

  • Cosmetics Regulation annex IV / ref 86.Source →
  • Cosmetics Regulation annex II / ref 1361.Source →
  • CI 58000 is classed chemically as an anthraquinone colour. It conforms to the formula: Restriction: IV/86 (CI 58000) II/1361 (Pigment Red 83; CI 58000: when used as a substance in hair dye products)Source →
  • Pigment Red 83 is classed chemically as an anthraquinone colour. It conforms to the formula: Restriction: II/1361 (when used as a substance in hair dye products)Source →
• EU·EC·allowed_listedAnnex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products.

  • Annex IV of EU Cosmetics Regulation (EC) 1223/2009: colorants allowed in cosmetic products.Source →
• US·EPA·commercial use observedEPA CPDat observed this chemical in 14 composition records across product categories including Laboratory supplies, Home maintenance, Construction and building materials. EPA CPDat classifies this chemical for functional uses including Dye.

  • EPA CPDat observed this chemical in 14 composition records across product categories including Laboratory supplies, Home maintenance, Construction and building materials. EPA CPDat classifies this chemical for functional uses including Dye.Source →
• US·FDA·listed in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.

  • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for Alizarin. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

• SCCS

  EU Scientific Committee on Consumer Safety

  No SCCS opinion on file.

• CIR

  Cosmetic Ingredient Review (US expert panel)

  No CIR safety assessment on file.