Optical Brightening Agents (OBA)

Optical Brightening Agents (OBAs) are special dyes used in products like laundry detergents, paper, and fabrics to enhance appearance. They work by absorbing ultraviolet light and emitting visible blue light, which makes whites and colors look brighter and cleaner to our eyes. OBAs do not bleach or actually whiten the material; instead, they create an optical illusion of enhanced brightness, giving items a fresher, more vibrant look. These agents are widely used because they are effective, safe, and inexpensive ways to improve the visual appeal of various products.