We recommend pre-washing all washable fabrics before sewing the garment. This helps eliminate shrinkage before you make the garment (one of the advantages of sewing). Always wash and dry cold or warm, not hot. Be sure to unfold the fabric before washing. When possible, hang/lay flat to dry (Hot dryers wear, shrink, and wrinkle fabrics). Re-inspect fabric after washing. Do not use bleach or detergent with bleach additive. Wash dark cottons and rayons separately, using a mild soap. Dark prints may require extra rinsing to remove excess dye.