Magnesium Hydroxide (Magnesium Hydroxide) - ph adjuster, antimicrobial, viscosity modifier

INCI Name

Magnesium Hydroxide

Functions

3 Roles

Sustainability

7/10

What It Does

Magnesium Hydroxide is an inorganic alkaline compound derived from seawater or magnesium-containing minerals through precipitation processes. In cosmetics, it serves as a highly effective pH adjuster and neutralizer, particularly valued in deodorants for its ability to neutralize odor-causing acids while providing antimicrobial benefits without aluminum. Formulators choose it for its gentle alkalinity, skin-soothing properties, and its ability to create stable, high-pH formulations while contributing a slight thickening effect to suspensions and emulsions.

Optimizes formula stability

Ensures skin compatibility

Maximizes ingredient efficacy

Prevents irritation

Technical Properties

pH Range

10.0-11.5

Optimal working range

Ionic Charge

cationic

Molecular charge type

Viscosity Effect

thickening

Impact on formula thickness

Ingredient Compatibility

Known Interactions

CALCIUMNoteAbsorption Competition

Calcium and Magnesium compete for absorption at high doses. While they can be combined at moderate levels, high-dose formulations should separate them or use chelated forms.

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