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Moumoujus

METHYLFURFURAL.

Avoid CAS 620-02-0 / PERFUMING

Methylfurfural is an organic compound with demonstrated ability to reduce malodor by inhibiting the fermentation of certain bacteria. While widely recognized as safe for internal consumption as a food flavoring, its topical application warrants significant caution.

Summary

Deodorant Fragrance

Science

Mechanism of Action

5-Methylfurfural actively reduces malodor production by inhibiting the sodium L-lactate fermentation process carried out by bacteria such as Staphylococcus epidermidis.

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

This compound features a reactive aldehyde group and a furan ring, allowing for typical furanoid reactivity such as electrophilic substitution at C5. It can also form stable acetals when combined with alcohols.

Safety

Safety Profile

CIR Status
Not reviewed
Sensitization risk Unknown

Methylfurfural is classified with a 'Warning' according to GHS labeling due to its irritating properties, including H315 (Causes skin irritation), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). While the FDA lists 5-METHYLFURFURAL as Generally Recognized As Safe (GRAS) for use as a flavoring agent in food, this status does not directly translate to safety for topical cosmetic applications.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Avoid

Despite its ability to reduce malodor, Methylfurfural is not recommended for Moumoujus skincare formulations due to its documented classification as a skin and eye irritant and the absence of specific topical efficacy data.

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