DMC Cotton Floss is 100% colorfast and can be washed on a frequent basis, without causing the color to fade. The Floss can be washed at very high temperatures 95° C/203° F. Particular attention should be paid to the fabric on which the thread was embroidered. Wash your embroidery with one teaspoon of mild soap such as Orvus. After washing, gently wring it out and rinse it as many times as necessary to get the soap out of it (until the water is clear). Use almost cold water to rinse the piece. Wrap the embroidery in a towel to remove excess water, then dry flat. Place the embroidery on a clean towel, preferably while still damp, and iron on the reverse side, at the temperature setting recommended for the fabric.