All my fabric goes into the laundry room before it goes into my sewing room. Each fabric can shrink at a different percent and this can cause a problem at a later time. Also, colors can run. Not just red, but blue, aqua, green, brown and blacks. So to be safe it gets washed. Then I use Magic Sizing spray to give the fabric a very light amount of body. I have never been disappointed in the results. 8-)