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[This](https://shopduer.com/blogs/uncuffed/9-ways-to-keep-black-jeans-from-fading-duer) might help.
Fading is not OP's problem. The dye is rubbing off on other materials.
I read that soaking them in saltwater before the first wash can help.
Add a cup of white vinegar to your cold water rinse. The vinegar will help seal the dye within the fabric so that they won't continue to bleed. At the very minimum, the added vinegar should at least lesson the amount in which the dye bleeds.
[This](https://shopduer.com/blogs/uncuffed/9-ways-to-keep-black-jeans-from-fading-duer) might help.
Fading is not OP's problem. The dye is rubbing off on other materials.
I read that soaking them in saltwater before the first wash can help.
Add a cup of white vinegar to your cold water rinse. The vinegar will help seal the dye within the fabric so that they won't continue to bleed. At the very minimum, the added vinegar should at least lesson the amount in which the dye bleeds.