Trying to Keep Beautiful Fabrics From Fading

I have a few very vintage fabrics that don't have very stable coloring. Even little drops of water from my iron cause the dye to spread :(

Does anyone have any personal experience / advice on how to wash these fabrics so their dyes don't run all over the place? I know of the vinegar trick but I am looking for others!

Thanks so much you guys!

Also Jean Claude Van Damme is planning on fighting early next year (!!!!)

I leave you with this gem