Acid Red 18

INCI: CI 16255

CAS Number
2611-82-7
Function
Cosmetic colorant; semi-permanent hair dye
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
EU Max Conc. 0.5%
๐Ÿ‡บ๐Ÿ‡ธ US Status prohibited
US Notes Not FDA-approved; Ponceau 4R is not permitted in the US

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Azo dye (E124) approved as food colorant in EU but with lowered ADI from 4 to 0.7 mg/kg bw/day; not permitted in US cosmetics

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Concern Level: Moderate

Regulatory Flags

colorant eu_children_restricted

Frequently Asked Questions

Is Acid Red 18 safe in cosmetics?

Azo dye (E124) approved as food colorant in EU but with lowered ADI from 4 to 0.7 mg/kg bw/day; not permitted in US cosmetics The EU classifies Acid Red 18 as "prohibited". Safety rating: GOOD.

Is Acid Red 18 allowed in the EU?

Acid Red 18 EU regulatory status: prohibited. Maximum allowed concentration: 0.5%. This is based on EU Regulation 1223/2009 and its amendments.

What does Acid Red 18 do in cosmetics?

Acid Red 18 functions as: Cosmetic colorant; semi-permanent hair dye. It is classified as a cosmetic ingredient in our database. CAS number: 2611-82-7.

What is the Margin of Safety for Acid Red 18?

adequate The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.

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