Science
Mechanism of Action
As a second messenger, Trisodium Inositol Triphosphate is generated via the hydrolysis of phosphatidylinositol 4,5-bisphosphate (PIP2) by phospholipase C (PLC). Upon production, IP3 traverses the cell to bind with its specific receptor, a calcium channel situated on the endoplasmic reticulum. This binding event triggers the release of stored calcium ions into the cellular cytosol, thereby activating a cascade of intracellular signals that are regulated by calcium. In studies conducted on burned rat skin, the D-myo-Inositol-1,2,6-triphosphate isomer demonstrated a reduction in the release of pro-inflammatory mediators, specifically thromboxane B2 (TXB2) and leukotriene B4 (LTB4). Conversely, in non-burned rat skin, an increase in prostaglandin E (PGE) and LTB4 release was observed, suggesting a nuanced, context-specific influence on inflammatory pathways.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Trisodium Inositol Triphosphate, particularly the D-myo-Inositol 1,4,5-tris-phosphate trisodium salt, exhibits good solubility in water (e.g., 10 mg/mL), with slight solubility in DMSO and ethanol (0.1-1 mg/mL). This ingredient is hygroscopic, meaning it attracts and holds water molecules. Reconstituted stock solutions maintain stability for up to 3 months when stored at -20°C. For use in formulations, aqueous stock solutions should be diluted to the desired working concentration, then filtered and sterilized using a 0.22 μm filter.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel concluded in 2018 that Trisodium Inositol Triphosphate, along with other polyol phosphates, is safe for use in cosmetics under current practices and concentrations. The broader category of 'Inositol,' which encompasses this triphosphate, has been noted by CIR for use up to 4% in face and neck preparations. There is no specific SCCS opinion available for Trisodium Inositol Triphosphate. 'Inositol' is generally recognized as safe (GRAS) by the FDA for food and dietary supplement applications, but it lacks FDA approval for over-the-counter (OTC) drug uses.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Trisodium Inositol Triphosphate presents an intriguing mechanism as a cellular second messenger, but a lack of human clinical studies necessitates further research to substantiate its direct efficacy and optimal application in skincare.
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References
Sources