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CI 20170.

Avoid CAS 1320-07-6 / 6371-84-2 / COLORANT, HAIR DYEING

CI 20170, also known as D&C Brown No. 1, is a synthetic azo dye primarily used to impart color in various cosmetic products.

colorant

Science

As a disazo colorant, its primary function is to deliver a brown hue to formulations, without contributing to specific skin functions.


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

Optimal pH range for stability is not specifically documented; general cosmetic product stability considerations apply.


Safety

CIR Status
Not reviewed
Sensitization risk Unknown

Forbidden in Europe due to genotoxicity concerns and potential formation of carcinogenic amines. In the US, it requires FDA certification for external use but is not approved for the eye area or drugs.


Your Skin

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

Our Assessment

Avoid

Due to significant regulatory bans in Europe and unaddressed genotoxicity concerns, this ingredient is deemed unsuitable for precision skincare formulations.


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