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Moumoujus

DIACETYL.

Avoid CAS 431-03-8 / PERFUMING

Diacetyl, an alpha-dicarbonyl diketone, is primarily recognized as a flavoring and fragrance agent. No beneficial skincare effects, such as anti-aging or brightening, have been identified.

Summary

Fragrance

Science

Mechanism of Action

No specific mechanism of action for beneficial skincare effects on skin has been identified for Diacetyl. It should not be confused with Diacetyl Boldine, a distinct ingredient known to inhibit melanin production.

Research

Clinical Evidence

Low confidence
Effective range N/A
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH N/A
0 7 14

Stability

Diacetyl is highly volatile, possessing a high vapor pressure that leads to rapid evaporation at room temperature. Its inherent pH is approximately 3.20.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Low

While FDA GRAS for use as a food flavoring, Diacetyl lacks a specific CIR safety assessment for cosmetic use. Occupational exposure studies indicate it can be a mild skin irritant.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Given its lack of identified skincare benefits, high volatility, and potential for mild irritation, Diacetyl is generally not recommended for precision skincare formulations.

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