Science
Mechanism of Action
When applied topically, Magnesium Citrate is absorbed through the skin, primarily via hair follicles and sweat glands, reaching the dermis. Here, it actively supports the skin's barrier function by promoting lipid barrier integrity and increasing levels of filaggrin, a vital protein. Its anti-inflammatory properties may help reduce redness and irritation by modulating cortisol levels, while also contributing to sebum regulation. Furthermore, magnesium aids in collagen synthesis and acts as an antioxidant, defending the skin against free radical damage and supporting overall cellular function.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
The Formula
Formulation
Stability
Magnesium citrate is readily soluble in water. While it demonstrates stability within a general pH range of 6.0 to 8.5 for pharmaceutical and cosmetic grades, various forms can exhibit stability across a wider spectrum (from pH 3-4 to neutral pH 7). Solid magnesium citrate is hygroscopic, meaning it absorbs moisture from the air, a critical factor for careful storage and handling to maintain product integrity.
Safety
Safety Profile
The CIR Expert Panel has deemed Magnesium Citrate, along with other citrate salts, safe for use in cosmetic formulations under current practices. While related citrate esters may be used up to 12%, a specific maximum concentration for Magnesium Citrate alone in topical cosmetics was not delineated by CIR. It is also recognized by the FDA for use in food contact substances and as an approved inactive ingredient in oral drug products.
Your Skin
Skin Compatibility
Our Assessment
Verdict
Magnesium Citrate is a valuable ingredient for comprehensive skin conditioning, effectively enhancing hydration, supporting barrier function, and offering antioxidant benefits with a low risk of irritation for all skin types.
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