Science
Mechanism of Action
The mechanism of action for related isosorbide esters, such as Isosorbide Di-(Linoleate/Oleate) (IDL), involves augmenting the abundance of key epidermal barrier proteins, including filaggrin and involucrin, and boosting the hydration biomarker protein AQP-9. This prevents cytokine-mediated degradation of the stratum corneum, downregulates inflammatory gene expression, and promotes healthy keratinocyte differentiation. Isosorbide Dicaprylate (IDC), another derivative, reportedly upregulates Aquaporin 3 (AQP3) to facilitate water and glycerin transport into cells, potentially enhancing CD44 (hyaluronic acid receptor) and ceramide synthase activity while decreasing transepidermal water loss (TEWL).
Research
Clinical Evidence
Low confidence2% (for Isosorbide Di-(Linoleate/Oleate))
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Chemically related polysorbate esters are known to undergo hydrolysis in acidic or alkaline conditions. This degradation can lead to the liberation of poorly soluble fatty acids, potentially causing precipitation within aqueous formulations.
Safety
Safety Profile
The Cosmetic Ingredient Review (CIR) Expert Panel has assessed 'Sorbitan Oleate', a related compound, as safe for cosmetic use. Isosorbide itself, in its pharmaceutical forms (dinitrate/mononitrate), demonstrates a relatively high oral lethal dose (LD50) of 2010 mg/kg in rats, indicating low acute toxicity for the core structure.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While promising data exists for related isosorbide esters regarding skin hydration and barrier function, direct research on Isosorbide Oleate itself is currently insufficient to definitively establish its precise benefits and optimal application.
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References
Sources