Science
Mechanism of Action
This ingredient primarily functions as a film-former, creating a continuous, protective barrier upon application to the skin, hair, or nails. It can also serve as an excipient in fragrance compositions, contributing to their overall functional properties.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
As a reaction product of melamine and formaldehyde, Polyoxymethylene Melamine presents significant formulation challenges primarily due to its nature as a formaldehyde releaser. Its constituent melamine is weakly alkaline, with solubility increasing under weakly acidic, strong acid, and strong alkaline conditions with elevated temperatures. Related polymers like polyoxymethylene (POM) are inherently unstable, degrading in oxidative atmospheres, acidic or alkaline environments, hot water, and are sensitive to acid hydrolysis and oxidation by agents such as mineral acid and chlorine.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) has reported 'insufficient data to determine safety' for some concerns regarding Polyoxymethylene Melamine. However, CIR also cites 'strong evidence' for its classification as a human skin toxicant or allergen, leading EWG to rate it as 'MODERATE' for allergies and immunotoxicity. While CIR also determined it 'safe for use in cosmetics, subject to concentration or use limitations' with recommended impurity restrictions, its classification as a formaldehyde releaser remains a primary concern. The FDA status for direct cosmetic use on skin for this specific ingredient is currently unknown.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Due to its classification as a formaldehyde releaser and strong evidence suggesting potential skin toxicity and allergenicity, Polyoxymethylene Melamine is not recommended for use in precision skincare formulations.
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