Science
Mechanism of Action
Through hydrolysis, rice protein is converted into smaller, bioavailable peptides and amino acids that penetrate the skin more effectively. It acts as a humectant by forming a protective, moisture-binding film on the skin's surface, which enhances hydration, flexibility, and elasticity. The extract supports healthy skin by reinforcing the skin barrier, assisting in the repair of damaged skin, and promoting collagen and elastin synthesis. Furthermore, it exhibits antioxidant properties, neutralizes free radicals, and helps regulate oil production. It has also demonstrated potential to inhibit hyaluronidase, contributing to anti-aging effects, and tyrosinase, supporting skin brightening. Anti-inflammatory and wound-healing benefits are also observed.
Research
Clinical Evidence
Medium confidence2.5%
Key findings
- 01 Formulations incorporating 1-5% Hydrolyzed Rice Extract are suggested for general skin benefits, including improved moisture retention, enhanced elasticity, and anti-irritant effects.
- 02 In vitro studies indicate that a concentration of 8.91 mg/mL can achieve 50% inhibition of hyaluronidase activity, suggesting potential anti-aging properties.
- 03 In vitro studies indicate that a concentration of 107.6 mg/mL can achieve 50% inhibition of tyrosinase activity, suggesting potential skin brightening effects.
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Hydrolyzed Rice Extract is water-soluble, with optimal stability observed within a pH range of 4.0 to 7.0. The colloidal stability of its hydrolysates remains unaffected even after severe heat treatment at 140°C for 30 minutes, indicating robust thermal stability. Fermentation processes can further contribute to more stable, pH-balanced formulations.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded that Hydrolyzed Rice Extract is safe for use in cosmetics under current practices and concentrations. Although no explicit maximum concentration was established for this specific ingredient, similar plant-derived hydrolyzed proteins have been safely used up to 2.4% in products like nighttime skincare. It is generally well-tolerated, considered non-allergenic, and adverse reactions are infrequent, though patch testing is advised prior to extensive application.
Your Skin
Skin Compatibility
Our Assessment
Verdict
A versatile and well-tolerated ingredient, Hydrolyzed Rice Extract offers significant hydrating, anti-aging, and brightening benefits, making it a valuable addition to precision skincare formulations across all skin types.
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