Dark denim jeans often suffer from fading during a typical wash cycle. The use of detergents and warm water causes the dyes in jeans to bleed, resulting in reduced richness of color. Treating the garment with distilled vinegar prior to their first wash is a tried-and-true method of setting the dye, allowing the jeans to maintain their rich indigo hue over time.
Things You'll Need
Place your new jeans in a sink or wash basin. Put as much distilled vinegar as needed in the basin to cover the jeans; this might be as much as 4 to 5 cups.
Let the jeans soak for roughly 10 to 15 minutes. Turn your washing machine to cold.
Turn your jeans inside out. Place them in the machine with an additional cup of vinegar. Don’t use detergent, since laundry soap speeds up the fading process.
Run the washing machine for the complete cycle. Hang the jeans on a drying rack or clothesline to dry.
References and ResourcesReaders Digest: 150+ Household Uses for Vinegar
Versatile Vinegar: Cleaning with Vinegar