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Moumoujus

CI 77346.

Optional CAS 1345-16-0 / COLORANT

CI 77346 is an inorganic pigment, commonly known as Cobalt Blue, primarily utilized as a colorant in cosmetic formulations. It imparts a distinct blue hue to products, skin, nails, and hair by absorbing or reflecting light, and is recognized for its exceptional stability.

Summary

Colorant

Science

Mechanism of Action

CI 77346 functions as an inorganic colorant (pigment) by physically absorbing or reflecting light, thereby coloring cosmetic products, skin, nails, and/or hair.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH 6 – 9
0 7 14

Stability

This pigment, Cobalt Blue, demonstrates outstanding heat resistance, chemical stability, and outdoor durability, with strong resistance to acids, alkalis, and various solvents. It is noted for its easy dispersion and absence of penetration or migration in formulations.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

No direct CIR safety assessment for CI 77346 was found. It is listed as a permitted colorant (IV/131) under the EC Cosmetics Regulation (Regulation (EC) No. 1223/2009) Annex IV in the EU, implying use under specified conditions, though a specific maximum concentration was not identified. The FDA Color Additive Status List does not explicitly list CI 77346 for general cosmetic use in the United States.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

CI 77346 is a highly stable and effective inorganic pigment primarily valued for its coloring properties in cosmetic formulations, with no direct skin benefits beyond aesthetic enhancement.

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