Moderate Cosmetic Ingredient

ACID RED 51

CAS Number
16423-68-0; 1342-25-2
Function
Colorant, Hair Dyeing
Safety Rating
MODERATE

Regulatory Status

🇪🇺 EU Status Restricted
EU Max Conc. II/1337 (when used as a substance in hair dye products)
🇺🇸 US Status Not specifically regulated

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

Expert Verdict

ACID RED 51 is listed in the EU CosIng database with functions: Colorant, Hair Dyeing It is restricted under EU Cosmetics Regulation. Restriction: II/1337 (when used as a substance in hair dye products).

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Concern Level: Medium

Regulatory Flags

cosing-sourced eu-restricted needs-enrichment

Frequently Asked Questions

Is ACID RED 51 safe in cosmetics?

ACID RED 51 is listed in the EU CosIng database with functions: Colorant, Hair Dyeing It is restricted under EU Cosmetics Regulation. Restriction: II/1337 (when used as a substance in hair dye products). The EU classifies ACID RED 51 as "Restricted". Safety rating: MODERATE.

Is ACID RED 51 allowed in the EU?

ACID RED 51 EU regulatory status: Restricted. Maximum allowed concentration: II/1337 (when used as a substance in hair dye products). This is based on EU Regulation 1223/2009 and its amendments.

What does ACID RED 51 do in cosmetics?

ACID RED 51 functions as: Colorant, Hair Dyeing. It is classified as a cosmetic ingredient in our database. CAS number: 16423-68-0; 1342-25-2.

Compliance Tools

Check ACID RED 51 compliance across multiple jurisdictions:

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Ingredient Decoder
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Substance Compliance
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MoS Calculator
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