|Instead of hand-washing silk, which sometimes changes the texture and takes away the shine, I cut out my pattern pieces and sprayed them down in the shower to get rid of most of the sizing.
It's important not to wring or manipulate the fabric in any way. Since you're rinsing after they are cut, they are usually small enough to pat onto a towel to get rid of most water. While damp, I dried them completely using the iron on silk setting.
This makes the fabric softer and less prone to wrinkling, which is a nice touch for skirt pieces, which otherwise would look wrinkled and messy after driving in the car to an event/dinner/etc.
I did this on white silk and had no problems. The fabric was softer, but still retained much of the crispness and sheen. Be sure to test a patch on your silk first.