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Moumoujus

DIRECT RED 80.

Avoid CAS 2610-10-8 / HAIR DYEING

Direct Red 80 is a synthetic polyazo dye primarily utilized to impart a red color to various products. While its applications span industrial and biological fields, its function in cosmetic formulations is purely as a pigment.

Summary

Cosmetic Colorant

Science

Mechanism of Action

This polyazo dye functions by absorbing specific light wavelengths and reflecting red, thereby delivering its characteristic coloration. Although it binds to collagen and amyloid in biological staining, this mechanism does not confer active skin benefits in cosmetic applications.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

As a cosmetic colorant, Direct Red 80's primary function is aesthetic. There is no data indicating a risk of 'dusting' or loss of efficacy in a manner typical for active ingredients.

The Formula

Formulation

Solubility
Water
Optimal pH N/A
0 7 14

Stability

Aqueous solutions present a bluish-red to magenta hue and exhibit pH sensitivity. Strong acidic conditions lead to a purple precipitate, while concentrated sodium hydroxide shifts the color to magenta purple. It maintains stability under normal temperature and pressure but should be protected from excessive heat.

Conflicts

  • Strong oxidizing agents
  • Strong reducing agents
  • Concentrated hydrochloric acid (causes purple precipitate)
  • Concentrated sodium hydroxide (causes magenta purple color)

Safety

Safety Profile

CIR Status
Unsafe with restrictions
Sensitization risk High

Direct Red 80 is subject to significant restrictions and has been banned or deemed unsafe for cosmetic use by the EU Cosmetics Directive, making it 'unacceptable' for EWG VERIFIED products. GHS classifications report skin irritation in 10.7% of cases and serious eye irritation in 21.4% of cases. While not listed as carcinogenic by major regulatory bodies (ACGIH, IARC, NIOSH, NTP, OSHA), EWG notes 'limited evidence' of carcinogenicity.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy Medium
Comedogenicity Unknown

Our Assessment

Verdict

Avoid

Due to its classification as 'unsafe with restrictions' by CIR, an EU ban for cosmetic use, and documented irritation potential, Direct Red 80 is not recommended for precision skincare formulations.

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