Science
Mechanism of Action
Arginine Glutamate operates synergistically to bolster skin health at multiple levels. It stimulates keratinocyte proliferation, vital for skin regeneration, and significantly boosts collagen synthesis in fibroblasts, improving skin elasticity. Glutamate itself is integral to collagen formation and strengthens the skin barrier by contributing to the cornified envelope. Arginine complements this by enhancing ceramide synthesis, thereby reinforcing the barrier, and elevating skin hydration through its role in natural moisturizing factors. Furthermore, it aids wound healing, helps regulate itch sensations, and may improve nutrient delivery via nitric oxide synthesis.
Research
Clinical Evidence
High confidence1.8%
Key findings
- 01 Clinical application of a 1.8% Arginine Glutamate formulation (RE:pair), administered twice daily over four weeks, yielded significant improvements in burn scar patients, reducing itching and pain. This regimen also demonstrated a 35% improvement in transepidermal water loss (TEWL) and a 45% increase in skin hydration.
- 02 In vitro evaluations at 10 ppm (0.001%) revealed compelling efficacy, including a 94.55% wound recovery rate in scratch assays and a 32.47% increase in procollagen type I expression, underscoring its potential for skin repair and elasticity enhancement.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
This ingredient is water-soluble and demonstrates optimal stability within a weakly acidic to neutral pH range, up to pH 7.0. It enhances the physical stability of formulations, with beneficial effects observed at concentrations up to 200 mM, and stabilization plateauing around 100 mM. Its inherent buffering capacity further contributes to maintaining consistent product pH.
Safety
Safety Profile
The CIR Expert Panel has definitively concluded that amino acids and their simple salts, including Arginine and Glutamate, are safe for use in cosmetic products. The FDA reinforces this by listing amino acids and their salts as permitted food additives. In vitro studies further suggest that Arginine Glutamate's toxicity is comparable to sodium chloride (NaCl) at high concentrations (~400 mOsm/kg), indicating that cell death at such levels is unlikely to provoke an inflammatory response in vivo.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Arginine Glutamate, a potent amino acid complex, offers significant, clinically supported benefits for enhancing skin hydration, reinforcing the barrier, boosting collagen production, and promoting healing, positioning it as a highly valuable active for diverse skincare applications, particularly for compromised skin.
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References
Sources