I dyed some cotton velour 80/20 poly/cotton with several colors, including Dharma's "Cobalt". I think I used it a bit too much cobalt and the dye was probably over concentrated. I initially hosed it off with cold water then washed it 3 times in the coldRINSE/hotWASH/coldRINSE cycle with synthrapol. Then I additionally boiled water and poured it over (and soaked it a little) TWICE.
After each boiling rinse, the fabric runs clear when running cold water. But if I do a hot iron test between 2 white cotton scraps.... it continues to bleed. Also bleeds when I wrap the damp dyed fabric in white while cold.
Can I save this? Will it bleed forever? This fabric is going to be used in items that will be frequently washed in hot.