Mirror coating is a process used in the manufacturing of mirrors to enhance their reflectivity and durability. This coating is typically applied to the back surface of the mirror (the side opposite to the reflective surface) and is designed to prevent oxidation, corrosion, and degradation of the reflective coating. Mirror coating can be achieved through various methods, including vacuum deposition, chemical vapor deposition, spray coating, and sputtering. The choice of coating method depends on the desired properties of the mirror, such as reflectivity, durability, and cost-effectiveness. Mirror coating is commonly used in applications where precise reflection is required, such as in telescope mirrors, automotive rear-view mirrors, and decorative mirrors.