Clothing with poor color fastness often fades, which affects the quality and is not liked by people. Therefore, we need to know how to solve this problem. Only through detailed understanding, can we improve the color fastness of our textiles and avoid various problems.

_1. Choice of dyes and chemicals. Textile instrument manufacturers introduce the color fastness of a product and the selection of dyes and chemicals is very important. If the choice of dyes and chemicals is not appropriate, no matter how good auxiliaries and dyeing process are, there is no way to produce high quality color fastness. Only by choosing the appropriate dyes can we talk about the next step.

_2. Choose dyes according to the characteristics of the fibers. Different kinds of dyes have different bonding forms with fibers, and the bonding strength is also different. After the types of dyes are determined, the dyes with high dyeing performance are selected. For example, when dyeing wool fabrics, they are also strong acid dyes. The dyeing performance of domestic dyes is not as good as that of imported strong acid dyes. Not only the color is not good, but also the bonding strength is not as good as that of the latter.

_3. Choose dyes according to their color. The textile instrument manufacturer introduces that after determining the dyestuff category, it is necessary to further determine which dyestuff to use according to the color system and depth of the dyed color. First, choose the dyes whose color is similar to the required color as far as possible. If there is any deviation, then use other dyes to color. Second, look at the color fastness index of the selected dyes. The color fastness of the dye itself is poor, and the half-grade color fastness can be improved by the process.