How to wash and prewash silk fabric
Manufacturers of silk garments and bedding usually don’t bother to pre-wash fabric they work with. That’s why they put labels saying “Dry Clean Only”. I am against dry cleaning whenever possible because of chemicals even if it is organic. In China, they make silk fabric for at least 5000 years. And people cared for traditional silk garments long before dry cleaning. Silk is tough fabric, it only appears to be delicate! It certainly can be washed in water.