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Definition of color fastness
This is measured using a . The colour fastness following exposure to light of a material is defined as the level of change in colour it undergoes when exposed to light (ISO B02, ). Find out where bruises get their colors and why. Have you ever wondered why your bruises change colors, or what those colors signify? Colour fastness . Colour fastness is a term—used in the dyeing of textile materials—that characterizes a material's colour's resistance to fading or running. It refers to the resistance of textile colors to effects such as color change or transfer during processing and use. The fastness grade, i.e., the degree of color fastness of fabric, is evaluated according to the discoloration of a sample and the staining of the undyed lining fabric. Another name for color fastness is dye fastness. The fastness grade, i.e., the degree of color fastness of fabric, is evaluated according to the discoloration of a sample and the staining of the undyed lining fabric. Another name for color fastness is dye fastness. It refers to the resistance of textile colors to effects such as color change or transfer during processing and use. To test for color fastness, find a hidden seam . · Colorfastness is very important factor for buyer. Colourfastness properties of textiles are an important measure of quality of a product. Changes in stool color can be completely normal, but, at times, they may be indicative of an underlying health concern.