Use special detergent

For the very best and brightest results,Silk Queen Quilt Cover, it is best to use a special detergent for this purpose, because many commercial laundry detergents container optical brighteners which occupy the same positions you want the fabric to make available for the dye, and brighteners make deep colors look less intense. Appropriate detergents include Synthrapol, or pure SDS (sodium dodecyl sulfate or sodium lauryl sulfate), commonly sold in feed stores under the brand name Orvus. However, results of dyeing are generally acceptable even when ordinary detergents have been used for pre-washing. If you don't have Synthrapol, don't worry; just use whatever detergent you have