Science
Mechanism of Action
This ingredient complex capitalizes on the distinct properties of its metallic components. Magnesium hydroxide and magnesium carbonate efficiently absorb excess oil and reduce surface shine; magnesium hydroxide additionally helps regulate skin pH. Magnesium carbonate also exhibits hygroscopic qualities, aiding moisture retention, and provides mild anti-inflammatory and soothing effects. Zinc hydroxide offers significant soothing and calming benefits, reducing redness, supporting the healing process, and contributing astringent and antimicrobial properties.
Research
Clinical Evidence
Low confidenceN/A
Transparency
Dusting Analysis
While this ingredient is commonly found in powder-based cosmetic applications, there is no specific data indicating it commonly forms visible precipitates or 'dusts' on the skin when formulated in liquid cosmetic products.
The Formula
Formulation
Stability
Optimal stability and performance are typically achieved within a pH range of 8.0 to 9.5. The solubility of its magnesium hydroxide component is highly sensitive to both pH and temperature. Increasing pH from 6 to 10 can reduce the particle size of carbonate-containing aluminum hydroxide, potentially enhancing its dispersibility. This ingredient also acts as a stabilizer, providing high heat stability to formulations.
Conflicts
- acids
- strong oxidizing agents
Safety
Safety Profile
The ingredient 'Aluminum magnesium zinc carbonate hydroxide' (CAS 169314-88-9) has not received individual approval as a standalone chemical, though it can be used as a component within products conforming to group standards. MSDS data for related compounds suggest potential for skin, eye, and respiratory tract irritation. Similarly, zinc hydroxide, while sparingly soluble, may also cause irritation. Due to these factors and the 'medium' irritancy rating, precise formulation and concentration management are crucial to minimize potential irritation, particularly for sensitive individuals.
Your Skin
Skin Compatibility
Our Assessment
Verdict
While offering valuable absorbent, pH regulating, and soothing properties for oily and sensitive skin types, the lack of specific clinical efficacy studies, 'not reviewed' CIR status, and moderate irritation potential necessitate careful consideration and precise formulation.
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References
Sources