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Moumoujus

TRANS-2-HEXENYL BUTYRATE.

Avoid CAS 53398-83-7 / PERFUMING

Trans-2-Hexenyl Butyrate is a synthetic ester primarily employed in cosmetic formulations for its distinct fruity and floral aroma, which includes notes of green apple, banana, and pear. It serves exclusively as a scent additive, offering no direct active benefits to the skin.

Summary

Fragrance Ingredient

Science

Mechanism of Action

This ingredient functions solely as a perfuming agent, imparting a specific aroma to formulations. There is no identified mechanism of action by which Trans-2-Hexenyl Butyrate provides direct therapeutic or beneficial effects on the skin.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Commonly dusted

Trans-2-Hexenyl Butyrate is exclusively a perfuming agent. Its inclusion in formulations is for sensory appeal rather than direct skin benefits, and given its classification as a skin irritant, its presence in precision skincare products without a clear functional justification beyond fragrance warrants scrutiny.

The Formula

Formulation

Solubility
Oil
Optimal pH N/A
0 7 14

Stability

The ingredient demonstrates stability under normal temperatures and pressures.

Conflicts

  • Must be kept away from heat, hot surfaces, sparks, open flames, and other ignition sources due to its classification as a combustible liquid.

Safety

Safety Profile

CIR Status
Not reviewed
Max tested
5%
Sensitization risk Moderate

Classified as a Skin irritation Category 2 and Eye irritation Category 2, Trans-2-Hexenyl Butyrate has been observed to cause skin and serious eye irritation. While considered low-risk when handled properly, the stated maximum concentration of 5.0% applies to fragrance concentrates, not necessarily for finished cosmetic products applied directly to the skin, thus indicating potential concerns at higher levels in consumer formulations. The CIR status is currently 'not reviewed'.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

As a fragrance ingredient with no documented skin benefits and a confirmed risk of moderate skin irritation, Trans-2-Hexenyl Butyrate is not recommended for precision skincare formulations.

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