It penetrates fabric fiber for permanency and the paint won’t run or bleed. It dries flexible on fabric with no cracking. Prewash fabric to remove sizing, do not use fabric softener, after painting with a 2:1 paint to Textile Medium mix, let dry 7-days and heat set. Machine wash with mild soap on gentle cycle and air dry. Water based for easy clean up, has a low odor and is nontoxic.