Fluorescent brightener is a fluorescent dye, also known as a white dye, and a complex organic compound.  

Fluorescent/Optical Brightener is a chemical additive, also known as fluorescent dye, and a general term for a class of compounds.

Before understanding the principle of whitening, we must first understand what complementary colors are. Red, blue, and yellow are called the three primary colors, and almost all colors can be tuned out by mixing them.

Fluorescent whitening agent is a kind of color conditioning agent, which has the effect of brightening and brightening, and is widely used in many fields such as papermaking, textiles, and detergents.

The whitening of paper may usually be carried out in the process of papermaking, such as beating, sizing and surface coating.

Years of animal and human studies have shown that even direct skin contact with CBS pure, a Optical Brightener , is non-irritating and does not cause skin irritation