I use this same process for jelly rolls. Put in sink with straight Hot water and 1 - 2 tsp of Retayne. Like colors together. Gently swish with wooden spoon. Let sit 20 minutes. Rinse until water is clear. Place in salad spinner and twirl until most of the excess water is spun out. Hang on clothes drying rack to dry. When nearly dry press. I find using the straight hot water gets the shrinking accomplished without resorting to clothes dryer.