Originally Posted by
Peckish
Fill the tub or washer with hot water (140°) and let the water soak overnight. You can add Synthrapol if you want, or just use detergent. Rinse, then check for further bleeding by rubbing or squeezing the fabric onto a white cloth. I've never had a fabric bleed after treating it like this.
Synthropol is for hand dyes and Retayne is for commercially dyed fabrics. Kona would need retayne. I have used Robt. Kaufman Kona many times with no bleeding. Kona is a generic term and there are several mfg. that make kona.