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Moumoujus

ACID RED 95.

Optional CAS 33239-19-9 / HAIR DYEING

Acid Red 95, also known as CI 45425, is a synthetic xanthene dye used to impart a vibrant yellow-red to cherry-red color in cosmetic formulations. Its primary function is aesthetic, providing visual appeal to products.

Summary

colorant

Science

Mechanism of Action

This ingredient functions solely as a colorant, physically absorbing and reflecting light to create its characteristic hue. It possesses no inherent biological activity or therapeutic mechanism on the skin itself.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Water
Optimal pH 5 – 8
0 7 14

Stability

Optimal stability is achieved in aqueous solutions within a pH range of 5.0-8.0. Extreme pH values or exposure to strong oxidizing/reducing agents can lead to color degradation or precipitation.

Conflicts

  • strong acids
  • strong oxidizing agents
  • reducing agents
  • heavy metal ions

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

The ingredient is permanently listed by the FDA for externally applied cosmetics and drugs, requiring batch certification, but is not approved for eye area use. It is banned in the EU for hair dye products due to insufficient safety data.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

As a colorant, Acid Red 95 can enhance product aesthetics, but its regulatory restrictions and unknown irritancy/comedogenicity warrant careful consideration.

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