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

CI 28440.

Optional CAS 2519-30-4 / COLORANT

CI 28440, also known as Brilliant Black BN, is a synthetic azo dye engineered to impart a deep black to blue-black color in cosmetic formulations. It functions exclusively as a colorant, enhancing the visual appeal of products without offering direct skincare benefits.

Summary

Cosmetic Colorant

Science

Mechanism of Action

As a synthetic azo dye, CI 28440's mechanism on the skin is purely cosmetic; it deposits color to create a deep black or blue-black visual effect, thereby improving the aesthetic presentation of the product.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

No data is available regarding dusting properties for CI 28440.

The Formula

Formulation

Solubility
Water
Optimal pH 2 – 11
0 7 14

Stability

CI 28440 exhibits high solubility in water and remains stable across a broad pH range of 2 to 11. It demonstrates heat tolerance and good light fastness, making it suitable for various applications. To mitigate potential color fading from UV exposure, incorporating a UV filter into the formulation is advisable. For optimal long-term stability, store in a sealed container at room temperature, away from direct sunlight and heat, to ensure a shelf life of at least 5 years.

Conflicts

  • Not recommended for use as a water-soluble colorant in cream, lotion, gel, or serum formulas if the color is not intended to adhere to the skin's surface; alternatives like EasyWash™ are suggested for such applications.
  • Not suitable for direct mixing into makeup products; specialized makeup color powders should be utilized instead.

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
5%
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) has not published a specific monograph for CI 28440. However, its use in cosmetics is regulated, including approval under EU Annex IV after toxicological evaluations. The FDA permits a maximum concentration of 5.0% in skincare products within the USA. It is important to note that while generally well-tolerated with low skin absorption, particularly in rinse-off products, CI 28440 (Brilliant Black BN) is banned for food use in the United States and Japan. As an azo dye, it carries a potential risk for sensitization or cross-reactivity in azo-sensitive individuals, necessitating patch testing for those with sensitive skin. Its suitability for high leave-on exposure products may be restricted in certain regions.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Optional

CI 28440 is an optional cosmetic colorant providing a deep black hue, generally safe at concentrations up to 5.0% but requiring caution and patch testing for sensitive individuals due to its azo dye nature.

Related

Similar Ingredients

Finding similar ingredients…