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4-HYDROXYINDOLE.

Insufficient Data CAS 2380-94-1 / HAIR DYEING

A hydroxyindole derivative with emerging research in protein aggregation inhibition and potential anti-aging applications. Primarily studied as an amyloid inhibitor, this compound shows promise for preventing protein misfolding processes that contribute to skin aging. Currently more established in pharmaceutical research than cosmetic applications.

skin conditioning antioxidant

Science

Functions as an amyloid inhibitor by disrupting the formation of protein aggregates and fibrils, particularly amyloid-beta structures. Exhibits antioxidant properties while serving as an intermediate in melanin biosynthesis pathways, potentially influencing pigmentation regulation and providing skin conditioning benefits.


Research

Low confidence
Effective range 0.06–2.66%
Optimal

N/A

Key findings

  1. 01 Demonstrated dose-dependent inhibition of amyloid fibrillization (Aβ40/42) at concentrations of 0.06-2.66%, with effective suppression of protein aggregation during elongation phases

Transparency

Not commonly dusted

Primarily used as pharmaceutical intermediate and research chemical rather than established cosmetic ingredient, making dusting practices unclear


The Formula

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Limited water solubility but highly soluble in DMSO and organic solvents. Oxidation-sensitive requiring cold storage at 0-8°C to prevent degradation into dark polymers.

Conflicts

  • Strong oxidizing agents
  • Strong acids

Safety

CIR Status
Not reviewed
Sensitization risk Unknown

Lacks dedicated CIR safety assessment for cosmetic use, unlike its analog 6-Hydroxyindole which is approved for hair dyes. Primarily utilized in pharmaceutical synthesis rather than direct skincare applications.


Your Skin

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

Our Assessment

Insufficient Data

Intriguing research compound with potential anti-aging benefits, but lacks sufficient safety data and established cosmetic applications for current recommendation.


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References