Selenium is widely used in the electronics industry, particularly in the production of semiconductor devices and photocells. It plays a key role in solar panels due to its photoconductive properties, helping convert light into electrical energy. Selenium is also used as an additive in glass manufacturing to decolorize glass or to give it a ruby-red color. In metallurgy, it improves the machinability of stainless steel and copper alloys. It is used in some types of pigments for ceramics, paints, and plastics, providing vibrant red to orange shades. Selenium compounds are also found in anti-dandruff shampoos, where they help reduce scalp flaking and irritation. In agriculture, selenium is added to animal feed in trace amounts to prevent deficiency diseases. It is an essential micronutrient in human nutrition, supporting antioxidant enzymes and thyroid function.