I buy mine from Dharma Trading Company on line. I have seen it in quilt shops. Synthropol just keeps the dye suspended in the water so it won't get on other fabrics, if dye has already transfered to other fabrics you could toss in a couple ( color catchers) and rewash until it all comes out. The color catchers will ( grab) the dye & keep it from getting on other areas. Color catchers are sold in the laundry area of the grocery store, in a box like dryer sheets, made by *Shout*