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Moumoujus

METHOXY PEG-4 METHACRYLATE.

Valuable / NOT REPORTED

Methoxy PEG-4 Methacrylate is a functional monomer predominantly utilized for polymerization, forming crosslinked networks critical for hydrogels and polymer modifications. In cosmetic applications, particularly when integrated into copolymers, it functions as a hair conditioning agent and a precise viscosity controlling agent.

Summary

Hair Conditioning Viscosity Controlling Monomer Humectant Solvent

Science

Mechanism of Action

This ingredient acts as a reactive monomer, primarily undergoing polymerization through vinyl photopolymerization or Michael addition reactions to create intricate crosslinked polymer structures. When copolymerized, such as within Acrylates/Methoxy PEG-4 Methacrylate Copolymer, it contributes to enhanced hair manageability, softness, shine, and volume. Additionally, it can precisely control product viscosity, and as a PEG derivative, may offer humectant and solvent properties.

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 ingredient is prone to self-polymerization or partial crosslinking, necessitating the inclusion of inhibitors such as 4-Methoxyphenol or MEHQ, typically at concentrations around 200 ppm, to maintain stability during storage and handling.

Safety

Safety Profile

CIR Status
Safe with restrictions
Sensitization risk Moderate

The Cosmetic Ingredient Review (CIR) Expert Panel has affirmed the safety of polyethylene glycols (PEGs), including PEG-4, for general cosmetic use. However, methacrylate ester monomers, as a class, are associated with a potential for irritation and sensitization upon direct skin contact, leading to recommendations for their restricted use in applications like nail enhancements where skin avoidance is paramount. The safety profile of this ingredient significantly improves once it is polymerized into a copolymer. It is noted that certain related copolymers have been flagged for restrictions under the EU Cosmetics Directive.

Your Skin

Skin Compatibility

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

Our Assessment

Verdict

Valuable

This versatile monomer is valuable for precisely controlling cosmetic viscosity and serves as a crucial building block for copolymers that enhance hair conditioning, provided strict formulation controls are in place to minimize unreacted monomer.

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