does putting vinegar in the wash help hold color fast
If you add Â½ cup of white vinegar to the rinse cycle, the liquid will freshen up your laundry and help colors maintain their intensity. Prior to a first washing, you can also soak dark fabrics for 30 minutes in water mixed with Â½ cup of vinegar and 2 teaspoons of salt to help set the dyes. Organic Authority shares more tips on using vinegar to help fabric colors set.