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AR-ISOPROPYLPHENYLACETALDEHYDE.

Optional CAS 1335-44-0 / PERFUMING

A sophisticated aromatic aldehyde utilized in high-performance formulations for its crisp, 'green' olfactive profile and chemical neutralizing capabilities. This precision ingredient serves as both a scent enhancer and a functional deodorizer, ensuring product freshness and skin-surface odor control.

Perfuming Deodorizing

Science

This molecule operates through two distinct pathways: it provides a sap-like aromatic profile and functions as a chemical deodorizer by reacting with and neutralizing alkaline malodors like ammonia. Upon skin contact, it is naturally metabolized by cutaneous enzymes into 4-isopropylphenylacetic acid.


Research

High confidence
Effective range 0.1–0.5%
Optimal

0.5%

Key findings

  1. 01 A 4% concentration was clinically validated via HRIPT as non-irritating and non-sensitizing (RIFM, 1979).
  2. 02 Safety benchmarks established a No Expected Sensitization Induction Level (NESIL) of 1100 μg/cm² to ensure consumer safety (Api et al., 2024).

Transparency

Not commonly dusted
Min. effective
0.1%
Red flag below
0.01%

As a fragrance and deodorizing component, it is effective at very low concentrations; however, formulations using it below 0.1% for 'deodorizing' claims may be under-dosing for functional efficacy.


The Formula

Solubility
Oil
Optimal pH 3 – 7
0 7 14

Stability

Susceptible to oxidation into carboxylic acid when exposed to oxygen or alkaline environments; requires airtight, UV-protected packaging.

Synergies

  • Oil-based carriers
  • Antioxidants (to prevent oxidation)

Conflicts

  • Strong alkalis
  • Strong oxidizing agents
  • Thermal processing above 40°C

Safety

CIR Status
Not reviewed by CIR
Max tested
0.5%
Pregnancy
Safe
Sensitization risk Low

While it shows potential for minor in vitro genotoxicity in specific assays, weight-of-evidence assessments confirm it is safe and non-genotoxic at standard cosmetic usage levels (IFRA compliant).


Your Skin

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

Our Assessment

Optional

A high-precision aromatic and deodorizing agent best suited for non-sensitive skin types requiring odor neutralization and a green scent profile.


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