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HC RED NO. 8.

Avoid CAS 13556-29-1 / 97404-14-3 / 41959-35-7 / HAIR DYEING

HC Red No. 8 is a direct colorant predominantly used in various hair coloring formulations, including temporary and semi-permanent applications. Scientific literature does not support any beneficial mechanisms for its use in precision skincare.

hair dyeing

Science

This compound primarily functions by depositing color directly onto hair fibers. Its interaction with the skin, in a beneficial context, is undocumented; it is likely to act as a temporary staining agent upon incidental epidermal contact rather than conferring any therapeutic or protective effects.


Research

Insufficient-data confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

This ingredient is a colorant, not typically associated with 'dusting' as an active ingredient in skincare formulations.


The Formula

Solubility
Unknown
Optimal pH N/A
0 7 14

Stability

Specific optimal pH ranges for stability or detailed stability profiles for HC Red No. 8 are not readily available. Related dye compounds are generally noted for stability across varying acid and alkali conditions.


Safety

CIR Status
Not reviewed
Sensitization risk Moderate

Specific safety evaluations for HC Red No. 8 by regulatory bodies like CIR or SCCS are not publicly available. However, assessments of structurally similar direct hair dyes, such as HC Red No. 7, indicate a low risk of genotoxicity due to limited dermal absorption. HC Red No. 7 was identified as a moderate sensitizer in murine models. Regulatory guidelines for hair dye products, which often include compounds like HC Red No. 8, typically mandate caution statements and patch testing instructions to identify individuals susceptible to irritation or sensitization.


Your Skin

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

Our Assessment

Avoid

As a hair dye with no established skincare benefits and limited specific safety data for dermal application, HC Red No. 8 is deemed unsuitable for inclusion in precision skincare formulations.


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