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BENZHYDROL.

Optional CAS 91-01-0 / PERFUMING

An aromatic alcohol primarily utilized as a structural stabilizer for fragrance profiles within high-performance skincare and fine perfumery. It acts as a functional anchor, ensuring that delicate aromatic compounds remain perceptible on the skin for extended durations.

fragrance fixative perfuming chemical intermediate

Science

It functions by reducing the vapor pressure of more volatile fragrance components, effectively slowing their rate of evaporation. By anchoring these molecules to the skin's surface, it extends the sensory profile of a formulation and also serves as a chemical intermediate for the synthesis of specific UV-filtering agents like benzophenones.


Research

Medium confidence
Effective range 3–10%
Optimal

3%

Key findings

  1. 01 Identified by AICIS as a standard 3.0% fixative in fine fragrance to enhance longevity.
  2. 02 Technical data suggests a 10.0% ceiling for maximum stability and scent fixation in complex formulations.

Transparency

Not commonly dusted
Min. effective
3%
Red flag below
0.5%

While often used at sub-1% levels merely for scent, concentrations below 3.0% are insufficient to provide the technical fixative benefits required for long-wear aromatic stability.


The Formula

Solubility
Oil
Optimal pH 4.5 – 7.5
0 7 14

Stability

Maintains stability under standard environmental conditions but is highly reactive with strong oxidizing agents and acidic compounds.

Synergies

  • Volatile aromatic oils
  • Lipid-based delivery systems

Conflicts

  • Strong acids
  • Acid chlorides
  • Acid anhydrides
  • Strong oxidizing agents

Safety

CIR Status
Not reviewed
Max tested
10%
Sensitization risk Moderate

Classified as a GHS Category 2 irritant for both skin and eyes; monitoring for localized irritation is recommended.


Your Skin

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

Our Assessment

Optional

A technical additive essential for scent longevity but lacking direct physiological benefits for the skin barrier.


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