Use this little packet of color remover to remove color, lighten color, or brighten whites. It’s like a bleach, but not. It contains Thiourea Dioxide, a color removing agent which is safe to use on silks, unlike chlorine bleach. In fact you can use it on a plethora of fabrics! It takes out iDye, and you can test it on other dyes as well. One small packet of iDye color remover will treat 2-3 pounds of fabric.