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Moumoujus

BASIC VIOLET 3.

Avoid CAS 548-62-9 / HAIR DYEING

A potent triphenylmethane dye primarily recognized for its intense pigment and antimicrobial properties. While historically utilized as a topical antiseptic, its use in modern precision skincare is strictly limited due to significant safety and regulatory concerns regarding its long-term biological impact.

Summary

antiseptic colorant

Science

Mechanism of Action

It functions as a bacteriostatic and bactericidal agent by interfering with the respiratory enzymes of microorganisms through hydrogen ion competition. Furthermore, it binds to microbial DNA, disrupting cellular replication and inducing oxidative stress to neutralize fungal and bacterial pathogens.

Research

Clinical Evidence

Medium confidence
Effective range 0.5–2%
Optimal

1%

Key findings

  1. 01 Clinical data indicates 1% concentrations provide robust activity against Gram-positive bacteria like S. aureus and fungi such as C. albicans.
  2. 02 Studies focusing on chronic ulcers demonstrate efficacy at 0.5%–2% ranges, though significant local irritation was recorded at these therapeutic levels.

Transparency

Dusting Analysis

Not commonly dusted
Min. effective
0.1%
Red flag below
0.01%

Because Basic Violet 3 is a prohibited substance in many jurisdictions for cosmetic use, any presence in a formula—even at trace levels for 'toning' purposes—is a major regulatory and safety red flag.

The Formula

Formulation

Solubility
Water
Optimal pH 2 – 5
0 7 14

Stability

Extremely sensitive to ultraviolet light, which causes rapid degradation and loss of pigment. It also functions as a pH indicator, shifting from green to yellow in highly acidic environments.

Conflicts

  • Strong oxidizing agents
  • Anionic surfactants
  • Sodium hydroxide
  • Strong acids

Safety

Safety Profile

CIR Status
Insufficient data
Max tested
0%
Pregnancy
Caution
Sensitization risk High

Classified as a CMR (Carcinogenic, Mutagenic, or Toxic for Reproduction) substance in the European Union. It is explicitly listed in Annex II and prohibited for use in cosmetic products.

Your Skin

Skin Compatibility

No Normal
No Dry
No Oily
No Sensitive
Irritancy High
Comedogenicity Low

Our Assessment

Verdict

Avoid

Despite its antimicrobial efficacy, its classification as a CMR substance and high irritation potential make it unsuitable for precision skincare.

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References

Sources