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Moumoujus

CI 15800.

Questionable CAS 6371-76-2 / COLORANT

CI 15800, also known as D&C Red No. 31, is a synthetic red azo dye primarily used to impart color in cosmetic products and externally applied drugs. It serves an aesthetic purpose and offers no reported skin benefits.

Summary

Colorant

Science

Mechanism of Action

This azo dye's primary mechanism of action is to provide a red pigment to formulations, skin, nails, or hair for aesthetic enhancement. Its function is limited to coloring, lacking any direct therapeutic or beneficial skin effects.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

As an azo dye, CI 15800 can undergo photocatalytic degradation, potentially leading to the formation of impurities like carcinogenic aromatic amines.

Conflicts

  • Contact with mucous membranes
  • Hair coloring products (prohibited in EU)
  • Products for use in the immediate vicinity of the eye
  • Products intended for use on the lips

Safety

Safety Profile

CIR Status
Deferred evaluation
Sensitization risk Moderate

Regulatory bodies (EU, FDA) heavily restrict CI 15800, prohibiting its use near the eyes and lips due to suspected carcinogenicity, genetic defects, and potential for contact dermatitis. It requires certification in the US with strict impurity limits.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

CI 15800 is a colorant with no skin benefits, carrying significant safety concerns regarding potential carcinogenicity, genetic defects, and sensitization, leading to strict regulatory restrictions on its use.

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