Get a Free 5ml Mini Now Free 5ml Mini With Every Order of The Mantle
Moumoujus

4-T-BUTYL BENZALDEHYDE.

Avoid CAS 939-97-9 / FRAGRANCE

4-t-butyl benzaldehyde is a synthetic aromatic aldehyde primarily employed as a fragrance component in cosmetic formulations. While research indicates potential tyrosinase inhibitory properties that could theoretically influence melanin production, its primary role remains olfactory enhancement rather than active skincare benefits.

Summary

fragrance masking

Science

Mechanism of Action

Functions predominantly as a fragrance molecule to enhance product sensory experience. Laboratory studies suggest it may inhibit tyrosinase enzyme activity, potentially affecting melanin synthesis pathways, though this mechanism is not established for topical skincare applications.

Research

Clinical Evidence

Low confidence
Effective range ≤0.01%
Optimal

N/A

Key findings

  1. 01 Tyrosinase inhibition kinetic studies demonstrated potential enzyme inhibitory activity
  2. 02 ECHA safety evaluation established 0.01% maximum threshold due to reproductive toxicity concerns

Transparency

Dusting Analysis

Not commonly dusted
Red flag below
0.01%

Not typically used for dusting purposes due to severe regulatory restrictions and safety concerns at concentrations above 0.01%

The Formula

Formulation

Solubility
Oil
Optimal pH 6 – 8
0 7 14

Stability

Exhibits high reactivity with air and light exposure, requiring nitrogen atmosphere storage or dark, airtight containers to prevent oxidation to 4-t-butylbenzoic acid

Conflicts

  • Strong oxidizing agents
  • Alcohols
  • Strong bases

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
0.01%
Pregnancy
Caution
Sensitization risk Moderate

Classified as Category 1B reproductive toxin with suspected fertility and developmental harm potential. EU restricted to 0.01% maximum due to reproductive toxicity classification.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Reproductive toxicity concerns and stringent regulatory restrictions make this ingredient unsuitable for precision skincare formulations despite potential tyrosinase inhibitory properties.

Related

Similar Ingredients

Finding similar ingredients…