What type of clothes are easy to fade color?

The fade color of the clothes is inevitable, and the way and reason of the fade color are also diverse, so what are the laws of the fade color of the clothes? 1. The textile of natural fiber is more easily faded than chemical fiber (especially synthetic fiber). Textile of cotton, hemp, silk and wool are more easily faded than textiles of nylon, polyester, acrylic, and so on. In particular, silk and cotton are easy to faded. This is mainly because natural fibers are water-soluble anionic dyes, and most of the chemical fibers are non-water-soluble disperse dyes. 2. Textiles with thicker colors and brightly colored textiles are easy to color fade. That is to say, black, dark, bright red, bright green, bright blue, bright purple and so on are easy to fade, while those light colors and some darker colors of textiles are not easy to fade. 3. A loose textile is more likely to fade color than a dense textile. That is, the yarn with relatively thick, the structure with relatively loose, and the textile with relatively thick, they are easy to color fade, for example, woolen, medium, and heavy-weight silk, and the like. The texiles with tight yarns are not easy to color fade. It's not difficult to see that if a bright red, purple and thick-heavy coat of pure wool, it will almost certainly color fade, and the same acrylic coat won't faded. Also like a black silk dress, it will be color fade when washing, and the same polyester dress will almost never color fade. Some famous brands of clothing in summer or close fitting, among which women clothes are more common, often easy to color fade, this is because famous brand clothing manufacturers often choose some natural ingredients of dye for dyeing. This kind of dyestuff has poor colorfastness, but is harmless to the human body and environmentally friendly.