Science
Mechanism of Action
This ingredient functions primarily as a cleansing and foaming agent in cosmetic formulations. Its arginine component is a natural moisturizing factor (NMF) that actively draws water to the skin's surface and helps to seal it in, thereby enhancing overall hydration. Arginine also strengthens the skin barrier by promoting the synthesis of essential components such as ceramides. It contributes to skin repair by boosting collagen synthesis, which improves skin elasticity and firmness, and can accelerate wound healing through increased nitric oxide production and optimized epithelial cell proliferation. Furthermore, arginine exhibits antioxidant properties, offering protection against oxidative stress. Its inherent cationic nature provides substantivity to negatively charged skin and hair surfaces, allowing it to act as an effective film-former.
Research
Clinical Evidence
Medium confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
A related compound, Nα-Lauroylarginine ethyl ester (LAE), demonstrates clear water solubility across a broad pH range of 1.0 to 7.3. Arginine itself can influence protein solubility and thermal stability, with increased solubility observed at lower pH values (5.0-6.0) and enhanced thermal stability up to pH 7.0. Sodium Lauroyl Glycinate, a comparable amino acid-based surfactant, exhibits excellent chemical stability and is compatible with skin-friendly pH levels.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that amino acid alkyl amides, a class which includes Lauroyl Arginine, are safe for use in cosmetics under current practices and concentrations, provided they are formulated to be non-irritating. The arginine component is recognized as Generally Recognized As Safe (GRAS) by the FDA as a direct food additive and is considered safe for cosmetic use by European regulations, typically incorporated at 0.5% to 5% with no reported side effects. Furthermore, a 10% mixture of lauroyl arginine was found to be non-irritating to rabbit eyes.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Arginine Lauroyl Glycinate is a valuable, multifunctional ingredient that provides effective cleansing alongside significant skin conditioning, hydration, and barrier-supporting benefits, making it suitable for diverse skin types.
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