Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

ACID BLACK 52.

Questionable CAS 5610-64-0 / HAIR DYEING

Acid Black 52 is an anionic monoazo chromium complex primarily utilized as a technical and cosmetic dye, particularly in hair color formulations, rather than as a functional active in skincare.

Summary

colorant

Science

Mechanism of Action

This dye operates via electrostatic binding, forming ionic interactions between its negatively charged molecules and positively charged protein sites, such as keratin, under acidic conditions.

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 4 – 9.5
0 7 14

Stability

It exhibits stability under typical temperatures and pressures, with its chromium complex enhancing light and wash fastness. A pH of 9.5 is utilized during manufacturing for stable solutions.

Conflicts

  • Strong oxidizing agents
  • Strong acids (can cause precipitation)
  • Cationic surfactants (may form insoluble complexes)

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Moderate

Not specifically reviewed by CIR for skincare; however, it is listed in the EU Cosmetics Regulation as a hair dye component. Trivalent chromium compounds may induce eczematous dermatitis in sensitive individuals.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

Primarily a hair and industrial dye, Acid Black 52 lacks functional skincare benefits and presents a moderate sensitization risk for sensitive individuals, making its use in precision skincare questionable.

Related

Similar Ingredients

Finding similar ingredients…

References

Sources