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CI 15620.

Avoid CAS 1658-56-6 / COLORANT

CI 15620, also known as Acid Red 88, is a synthetic azo dye primarily used as a colorant in cosmetic formulations. It imparts a vibrant red hue by interacting with physical light.

Colorant

Science

This synthetic colorant functions by absorbing or reflecting physical light, which visually translates into a red color. It can color cosmetic products, skin, nails, or hair upon application.


Research

Insufficient-data confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

The Formula

Solubility
Water
Optimal pH N/A
0 7 14

Stability

The colorant demonstrates strong stability and resistance to fading, maintaining integrity for at least 4 years. To prevent severe hydrolysis at high temperatures, formulation pH should ideally remain below 10.0.

Conflicts

  • Copper ions
  • Iron ions

Safety

CIR Status
Not reviewed
Sensitization risk Low

The CIR Expert Panel has not reviewed CI 15620. While the EU permits its use in rinse-off products, the US FDA has delisted it for external cosmetic applications. ECHA classifies it as causing serious eye irritation.


Your Skin

Yes Normal
Yes Dry
Yes Oily
Yes Sensitive
Irritancy Low
Comedogenicity Unknown

Our Assessment

Avoid

As a synthetic red colorant, CI 15620's utility in precision skincare is heavily limited by significant regulatory restrictions and a warning for serious eye irritation.


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