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Moumoujus

PHENYLPROPIONALDEHYDE.

Avoid CAS 1335-10-0 / PERFUMING

Phenylpropionaldehyde is an aromatic aldehyde primarily utilized in skincare formulations for its fragrance properties. However, its use is significantly restricted due to a substantial risk of causing allergic reactions and skin sensitization, particularly in sensitive individuals.

Summary

Fragrance Antimicrobial (potential)

Science

Mechanism of Action

This ingredient primarily functions as a fragrance enhancer, imparting a distinct scent to cosmetic products. While some research suggests potential antimicrobial activity, its most notable dermal effect is its propensity to induce allergic skin reactions and sensitization upon exposure.

Research

Clinical Evidence

Insufficient-data confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

Phenylpropionaldehyde exhibits sensitivity to air and has a tendency to undergo self-condensation, impacting its stability within formulations.

Conflicts

  • alkalis

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0.041%
Sensitization risk High

While isomers like 2- and 3-Phenylpropionaldehyde are deemed safe by the FDA as flavoring agents at current intake levels, the International Fragrance Association (IFRA) imposes strict restrictions on 2-Phenylpropionaldehyde due to significant concerns regarding dermal sensitization and potential systemic toxicity. For leave-on facial moisturizers (IFRA Category 5B), the maximum permissible concentration is 0.041%.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Given its primary role as a fragrance agent combined with a high risk of skin sensitization and irritation, Phenylpropionaldehyde is an ingredient best avoided in precision skincare formulations.

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