Does vinegar help set color? Although there is a popular belief that using salt and white vinegar to set dyes in your fabrics work, it actually does not. The acid in the vinegar helps set the dye, but is only essential in the dying process and does not really work for cotton dyes.
Does vinegar keep colors from bleeding? Vinegar works as a treatment for stains and odors, not colorfastness. The common belief that vinegar keeps colors from fading or bleeding is not entirely true. In fact, vinegar can actually alter the colors in some fabrics instead of preventing them from fading.
Does vinegar keep colors from fading? Did you know that white vinegar can help to keep fabric colors from fading? If you add ½ cup of white vinegar to the rinse cycle, the liquid will freshen up your laundry and help colors maintain their intensity.
Does vinegar affect color? Adding just 1/2 cup of vinegar to the final rinse will result in brighter, clearer colors. Add the distilled white vinegar to the fabric softener dispenser, or add the vinegar manually at the beginning of the rinse cycle. The mild acetic acid in vinegar also acts as a whitener and brightener for gray, dingy clothes.