Just wanted to report that I handwashed one of my H silk scarves this weekend and I'm ecstatic with the result! I will do this going forward as I don't trust a dry cleaner with my scarves. All the drycleaners around me are cheapo chain ones. No matter how much I insist I'm sure they would iron the hems and pin tags right onto the silk. Plus handwashing is friendlier on the wallet, obviously
It's a scarf from last season so I can't speak to whether this method would work for older scarves. But with this newish scarf, the colors did not run at all. The one significant result is that the handwashing got rid of the sizing which makes the scarves stiffer. Basically you end up with a scarf that is close to the texture of the Hermes wash scarves. I had read that this would happen and it was one of my goals in handwashing the scarf. I love the wash texture and find that a softer, flowier scarf drapes and ties better.
Without further ado here are the steps I followed:
1. Swished the scarf around continuously for 2-3 minutes in a basin of cold water mixed with a little handwashing/delicates detergent, and gently rubbed out the one little stain I had
2. Rinsed thoroughly
3. Immediately rolled it up in a clean towel to squeeze out the excess water
4. Laid it out flat and waited a few hours for it to dry a bit
5. While still slightly damp, ironed it on the back, on low heat.