Magnesium Hydroxide is an inorganic compound with the chemical formula Mg(OH) and appears as a white, odorless powder or suspension. It is commonly known as milk of magnesia when dispersed in water and is widely used in pharmaceutical, cosmetic, industrial, and environmental applications. Magnesium hydroxide is produced by reacting magnesium salts with alkaline substances or by processing natural minerals containing magnesium. The compound is only slightly soluble in water but forms alkaline solutions that help neutralize acids. In the pharmaceutical industry, it is commonly used as an antacid to relieve indigestion, heartburn, and acid reflux, and also as a mild laxative for temporary constipation relief. In cosmetics and personal care products, magnesium hydroxide is used in deodorants, skin care products, and cleansing formulations because of its absorbent and odor-neutralizing properties. Industrially, it is used as a flame retardant additive in plastics, rubber, and electrical materials due to its ability to release water when heated and reduce fire hazards. It is also used in wastewater treatment and environmental protection processes to neutralize acidic waste streams and control pH levels. The compound is valued for its low toxicity, chemical stability, and environmentally friendly characteristics. Magnesium hydroxide is further applied in the manufacture of magnesium salts, ceramics, and specialty chemicals. Proper storage in dry and sealed containers is recommended to maintain product quality and prevent contamination.