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Moumoujus

UNDECYLENOYL PEG-5 PARABEN.

Questionable / ANTIMICROBIAL

This ingredient functions as an antimicrobial agent, effectively suppressing the growth of bacteria, fungi, and viruses. It is utilized in various cosmetic and skincare formulations to enhance product preservation.

Summary

Antimicrobial

Science

Mechanism of Action

It renders the stratum corneum temporarily bactericidal and fungicidal by distorting microbial cell membrane structures. This action inhibits microorganism replication and growth within the formulation.

Research

Clinical Evidence

Low confidence
Effective range ≤0.4%
Optimal

N/A

Transparency

Dusting Analysis

Not commonly dusted

The Formula

Formulation

Solubility
Both
Optimal pH ≤7
0 7 14

Stability

Parabens exhibit stability in acidic to neutral pH ranges; hydrolysis is appreciable above pH 7. As a PEG derivative, it is expected to have broad solubility characteristics.

Conflicts

  • Strong hydrogen bonders (e.g., highly ethoxylated compounds, cellulose derivatives, proteins, lecithin), which can inactivate parabens.
  • Other PEGylated molecules, potentially causing the paraben to precipitate out of solution.

Safety

Safety Profile

CIR Status
Safe with restrictions
Max tested
0.4%
Sensitization risk Unknown

Authorized by FDA and SCCP/CIR for single parabens up to 0.4%, this derivative faces ongoing scientific debate. Concerns regarding potential endocrine disruption and reproductive toxicity persist, leading EWG to classify it as 'RESTRICTED'.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Questionable

An antimicrobial agent with general paraben regulatory authorization up to 0.4%, but specific efficacy data for this derivative is absent, and broader concerns regarding potential endocrine disruption warrant caution.

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