Calcium carbonate (CaCO₃) is a widely used compound, commonly found in supplements for treating calcium deficiencies, managing heartburn, and as a component of various medications. While it is generally considered safe for healthy individuals, its effects on kidney health can be more complicated, particularly for those with pre-existing kidney conditions.

Talc powder has been a widely used ingredient in cosmetics and personal care products for many years, thanks to its versatile properties. Despite concerns about its safety, talc powder continues to be permitted in makeup and other beauty products due to several factors, primarily its functional benefits and the regulatory oversight in place to ensure its safe use. Here's why talc powder is allowed in makeup:

​Brucite is a naturally occurring mineral composed primarily of magnesium hydroxide (Mg(OH)₂), and it is commonly found in metamorphic rocks. While it shares some similarities with asbestos minerals, such as its fibrous structure, it is not classified as an asbestos mineral.

Magnesium oxide (MgO), also known as magnesia, is a highly versatile compound widely used in various industries due to its unique properties. Its primary applications span fields such as healthcare, agriculture, construction, and manufacturing.

Flame retardant are critical components used in a wide range of applications to enhance the fire resistance of materials, particularly in the plastics and resin industries. Among the various flame retardants, magnesium hydroxide (Mg(OH)₂) and aluminum hydroxide (Al(OH)₃) are two commonly used inorganic compounds.

Talc powder is a naturally occurring mineral composed primarily of magnesium, silicon, and oxygen. Known for its softness, smooth texture, and absorbent properties, talc has a variety of uses across multiple industries, including personal care, pharmaceuticals, and manufacturing. Here’s a deeper look into its main applications:

One of the primary industrial uses of brucite is as a flame retardant. When heated, brucite decomposes into magnesium oxide and water vapor, both of which help to suppress flames. This property makes brucite a valuable additive in fire-resistant materials, including coatings, plastics, and textiles. It is widely used in industries such as construction, automotive, and electronics to improve fire safety.

Talc powder is a naturally occurring mineral commonly used in baby powders, cosmetics, and other personal care products for its ability to absorb moisture and reduce friction. However, the safety of talc, particularly in powder form, has been a topic of concern for many years.

One of the primary uses of brucite is in the production of flame retardants. When heated, brucite decomposes into magnesium oxide and water vapor, both of which act as a barrier to fire, making it a key ingredient in fire-resistant materials like coatings, plastics, and textiles. This property makes brucite especially valuable in construction materials and automotive parts, where fire safety is crucial.

The surface modification of magnesium hydroxide is to improve its compatibility and dispersion in the polymer base material, thereby improving the mechanical properties and flame retardant efficiency, while reducing environmental pollution and optimizing the overall performance of the product. Here are seven main reasons why surface modification of magnesium hydroxide should not be ignored: