Originally Posted by noremac
I was just hoping that there was some sort of treatment available that would help ensure the dye didn't wash away so easily. For example, I've heard that soaking denim in vinegar or salt water helps. Has anyone tried this?
That may help a little, but at the heart of it, you're essentially asking if there's a way to stop clothes from wearing down. Indigo denim fades when the white core is exposed. Since indigo doesn't completely penetrate the yarn, the material's white core is revealed when the top surface wears down.
There's no treatment you can apply to sink the indigo in further. Or prevent the yarn from wearing down.
You may be able to minimize how much indigo is lost through the cleaning process (I imagine that's what people are trying to do with the vinegar stuff). If that's your goal, maybe look into dry cleaning? But there's nothing you can do to stop yarns from wearing down.
That said, some jeans fade faster than others. The PBJ NCs mentioned above, for example, are dyed with indanthrene, not indigo, which supposedly penetrates the yarn more.
If you're up for non-blue jeans, I also find that certain black jeans keep their color for a long time. 3sixteen's black warp/ black weft denim (what they call their double black denim) is really, really hard to fade.