Science
Mechanism of Action
Operating as a humectant, Disodium Inosinate actively binds water molecules, thereby increasing and maintaining hydration levels both within cosmetic products and on the skin's surface. Concurrently, it functions as a skin-conditioning agent, which helps to refine and improve the skin's overall texture and smoothness.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Disodium Inosinate is readily soluble in water, dissolving at a rate of 13g/100ml at 20°C. It exhibits high thermal stability, remaining intact at 100°C and resisting decomposition until approximately 230°C. Aqueous solutions are stable and typically neutral. However, it is prone to degradation when exposed to heated acid solutions.
Conflicts
- acid solutions (especially when heated)
- electrolyte-rich systems (potential impact on rheology and sensory profile)
- polymer gels (potential impact on rheology and sensory profile)
- phosphatase (enzyme can break it down)
Safety
Safety Profile
Disodium Inosinate is generally considered safe by global regulatory bodies for its intended uses. The U.S. FDA classifies it as 'Generally Recognized as Safe' (GRAS) for use as a food flavor enhancer, without specific safety concerns at typical consumption levels. The European Food Safety Authority (EFSA) permits its use as food additive E631, establishing an acceptable daily intake (ADI) of 0-3 mg/kg body weight. The EWG Skin Deep database assigns a low concern rating for potential hazards in personal care products, including cancer, allergies, immunotoxicity, and reproductive toxicity. While ingestion, particularly when combined with MSG, may pose concerns for individuals with gout or high uric acid due to its purine nature, and may provoke sensitivity in glutamate-sensitive individuals (with reported reactions like flushed skin, headaches, and numbness), these concerns are primarily related to dietary intake and are less relevant for topical application, where its irritancy is deemed low.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Disodium Inosinate offers valuable humectant and skin-conditioning benefits across all skin types, presenting a low risk of irritation for topical applications and robust formulation stability within its optimal pH range.
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