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5-HYDROXYVANILLIN.

Insufficient Data CAS 3934-87-0 / HAIR DYEING

A phenolic aldehyde derived from vanillin that functions as an antioxidant compound in cosmetic formulations. This bioactive molecule, naturally found in plant extracts like date seeds and blueberries, offers potential free radical protection and skin brightening properties. As a ferulic acid metabolite, it shares similar photoprotective characteristics while providing fragrance benefits to formulations.

antioxidant fragrance hair dyeing

Science

Functions as a free radical scavenger, neutralizing oxidative stress that can damage skin cells and accelerate aging. The phenolic structure enables it to donate electrons to unstable molecules, breaking the oxidative chain reaction. Additionally, it may inhibit tyrosinase enzyme activity, potentially reducing melanin production for skin brightening effects.


Research

Low confidence
Effective range N/A
Optimal

N/A


Transparency

Not commonly dusted

Limited commercial use and lack of established effective concentrations make dusting analysis difficult to determine for this ingredient.


The Formula

Solubility
Both
Optimal pH 6.5 – 8.5
0 7 14

Stability

Exhibits poor stability in acidic conditions below pH 3 and is susceptible to oxidation and color changes when exposed to air and light. Requires inert gas storage conditions for optimal preservation.

Conflicts

  • Strong oxidizing agents
  • Perchloric acid
  • Highly acidic formulations

Safety

CIR Status
Not reviewed
Sensitization risk Unknown

No individual safety assessment completed, though related vanilla extracts are generally recognized as safe up to 0.33%. Listed as approved cosmetic ingredient in EU CosIng database.


Your Skin

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

Our Assessment

Insufficient Data

Promising antioxidant potential but lacks clinical validation and established safety parameters for skincare applications.


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References