How much bleach do you need to use to make med-blue colored jeans turn white?
This sounds like a fun and challenging project! We never recommend letting undiluted bleach contact any fabrics or hard surfaces—it should always be diluted first. Depending on the dye that is used to color an item, soaking in a bleach and water solution can produce several outcomes:
The recommended bleach soaking solution for bleachable fabrics is 3 tablespoons of Clorox® Regular Bleach2 added to 1 gallon of water. Items should be fully submerged and soaked no longer than 5 minutes before rinsing thoroughly. One bleach soak will probably not strip the color off the blue jeans as you would like, but you could try repeating the bleach soak multiple times to gradually remove the color safely (hopefully the dye will cooperate!). You could also try working with a stronger bleach solution to speed things up—I wouldn’t go any stronger than 1 part bleach to 12 parts water (1 cup Clorox® Regular Bleach2 added to 3 quarts water). Just be sure to keep to the 5 minute soak time.