Optical Brightening Agent (OBA)

An Optical Brightening Agent (OBA) is a chemical used to enhance the brightness and whiteness of materials, such as paper and fabrics. It works by absorbing ultraviolet light and re-emitting it as visible blue light, making the surface appear brighter to the human eye. This effect helps offset any yellowing in materials, giving them a cleaner, fresher look. OBAs are commonly found in laundry detergents, paper products, and textiles, helping to improve their appearance and making them more visually appealing.