Article last updated: October 15, 2024
Magnesium hydroxide is a naturally occurring mineral derived from brucite, a form of magnesium. Chemically, it is represented by the formula Mg(OH)2. This compound is known for its white, powdery appearance and is often referred to as “milk of magnesia” when used in medicinal contexts.
The history of magnesium hydroxide in cosmetics dates back several decades. Initially, it was primarily used for its medicinal properties, particularly as an antacid and laxative. However, its transition into the cosmetic industry was driven by its unique absorbent and buffering capabilities. These properties make it an excellent ingredient for controlling oil and maintaining the pH balance of various skincare and personal care products.
The production of magnesium hydroxide typically involves mining brucite or extracting magnesium from seawater. The extracted magnesium is then treated with water to form magnesium hydroxide. This process ensures that the final product is pure and suitable for use in cosmetic formulations.
In this section, we will delve into the officially recognized cosmetic benefits and uses of Magnesium Hydroxide:
Magnesium Hydroxide acts as an absorbent in cosmetic products. This means it has the ability to soak up excess oils and moisture from the skin. If you have oily skin or are prone to shine, products containing Magnesium Hydroxide can help keep your skin looking matte and fresh. It essentially helps in reducing that greasy feeling, making your skin feel cleaner and more balanced.
Another key function of Magnesium Hydroxide is its role as a buffering agent. This means it helps maintain the pH balance of cosmetic formulations. A balanced pH is crucial for the stability and effectiveness of skincare products. By keeping the pH levels in check, Magnesium Hydroxide ensures that the product remains gentle on your skin while still being effective. This is particularly important for those with sensitive skin, as it helps prevent irritation and discomfort.
Note: the listed benefits above are exclusively based on the officially recognized and defined functions of the ingredient, as documented by the International Nomenclature of Cosmetic Ingredients (INCI).
Magnesium hydroxide is generally considered safe for topical use in cosmetics. However, as with any ingredient, there are potential side effects and considerations to keep in mind.
Regarding individuals who are pregnant or breastfeeding, data and research on the topical usage of magnesium hydroxide during pregnancy are lacking. Therefore, it is advisable for these individuals to consult a healthcare professional for further advice before using products containing this ingredient.
Side effects and adverse reactions from magnesium hydroxide are relatively uncommon. However, to minimize the risk of irritation or allergic reactions, it is recommended to conduct a patch test before widespread usage.
Magnesium hydroxide has a comedogenicity rating of 1, meaning it is very unlikely to clog pores. This makes it a suitable option for individuals prone to acne, blemishes, or breakouts.
