|I used the directions found at the above link to preshrink silk charmeuse and silk habotai. Basically, I hand washed the silk using baby shampoo, rinsed it about a million times, then rinsed it again adding one quarter cup of white vinegar to the water. According to Silk Road (http://www.srfabrics.com/care/silk.htm) "Vinegar neutralizes any remaining soap, and allows it to rinse out completely restoring the fabric's natural sheen, it can make a dramatic difference." Then, I rinsed it in cool water one last time. Because I was washing several yards of fabric and didn't have the space (or patience) to hang dry it, I put the fabric in the dryer on fluff (no heat) with a clean, dry, white towel then ironed it while still damp.