How to Choose the Right Reactive Dyes?

Ordinary reactive dyes initially produce vibrant colors, but the chemical bonds they form with fibers break after repeated contact with water and detergents, causing dye molecules to detach.

How can this problem be solved?

1. Choose dyes with high fixation rates. 

These dyes react more fully with cellulosic fibers, leaving less unfixed dye residue. These "free" dyes are the main culprits for fading during washing.

2. Pay attention to the molecular structure of the dye. 

Dyes with dual reactive groups generally have better wash fastness than dyes with single reactive groups because they form stronger "crosslinks" with the fibers.

3. Optimize the dyeing process. 

Thorough soaping and post-treatment processes are crucial for removing unfixed dyes. A professional dye supplier should be able to provide you with complete process guidance.

In our collaborations with numerous garment fabric manufacturers, we have successfully helped clients improve wash fastness by 0.5-1 grades by providing a range of high-fixation reactive dyes and customized process advice, thereby significantly enhancing their product competitiveness.