WARNING: These cotton sheets are specially treated to absorb dye inks. Please be aware that the sheets will absorb and trap loose dyes in your wash water much like a color catcher. For this reason, we recommend that you wash the other fabrics with a color catcher BEFORE sewing the inkjet fabric sheet(s) into your project. Other fabrics (especially batiks) will release excess dyes when washed. Prewashing your fabrics to eliminate loose dye in the wash water will keep your inkjet fabric sheet(s) from absorbing the excess dyes.