one addition to my using the chalk line from the home depot...i never got that chalk wet! i only used a brush and brushed it away...and yes it all went away...even on the white fabrics. but i always test every time i am going to mark, no matter what i am planning to use, i have ruined great quilts using special quilters marking tools, including the water disappearing markers, the special quilters pencils, and other washable markers, so even if i just used this pencil on this quilt...when i'm marking the next quilt i test again...because this time it may not come out