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ANISOLE.

Optional CAS 100-66-3 / PERFUMING

Anisole is a high-purity aromatic ether primarily utilized in the cosmetic industry for its distinct anise-like olfactory profile and solvent capabilities. While it serves as a critical chemical precursor for synthesizing advanced UV filters and antioxidants, its direct application in topical skincare remains focused on fragrance stabilization and fixative properties.

fragrance solvent fixative chemical intermediate

Science

Anisole functions as an electron-rich aromatic solvent and fixative that modulates the volatility of other aromatic compounds, ensuring a sustained scent profile. Chemically, it acts as a precursor for synthetic anethole and facilitates the synthesis of protective skin agents through electrophilic aromatic substitution.


Research

Medium confidence
Effective range 0.24–1.5%
Optimal

0.24%

Key findings

  1. 01 RIFM Safety Assessment (2021) established the 95th percentile safety threshold at 0.24% for fragrance applications without genotoxic risk.
  2. 02 CIR evaluations of anisole derivatives demonstrate minimal cutaneous absorption (2.35 mcg/cm²) and high safety margins in oxidative formulations.

Transparency

Not commonly dusted
Min. effective
0.1%
Red flag below
0.25%

Because it is primarily a fragrance component rather than a bioactive therapeutic, use at concentrations exceeding 0.24% may indicate a shift from fragrance use to industrial solvent use, potentially increasing irritation risk.


The Formula

Solubility
Oil
Optimal pH 7 – 7.8
0 7 14

Stability

Stable at physiological pH (~7.4) and under standard storage conditions. Highly volatile with a high decomposition threshold, though sensitive to oxidative environments.

Synergies

  • Synthetic anethole
  • UV filters
  • Oil-based fragrance carriers

Conflicts

  • Strong oxidizing agents
  • Nitrosating substances

Safety

CIR Status
Not reviewed
Max tested
0.24%
Sensitization risk Moderate

Classified as a GHS Category 3 flammable liquid. Repeated exposure can lead to lipid depletion in the stratum corneum, resulting in dryness or cracking.


Your Skin

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

Our Assessment

Optional

A precise aromatic stabilizer and solvent best suited for fragrance-focused formulations in non-sensitive skin profiles.


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