So sorry to read of your mishap. I rubbed a hole into a vintage scarf once. In answer to your question, I have successfully used spray starch (what we in the UK call sizing!) on the back of my scarves. Just a tiny amount but it gives them a lovely scent and feel.Just wanted to share.my one recent mishap as I have successfully washed many scares. I have even boiled a scarf, that had come back from the Hermesmatic in an awful shade,on the stove in boiling peroxide. I believed that the scarves were mostly indestructible. Last week I got a couple of grease spots on my pale blue Robe Du Soie from my fingers after eating some buttered toast.I tried spot cleaning gently first. When that didn’t budge the spots, I used some Laundress bar soap and rubbed the spots more aggressively. I did end up getting rid of the grease stains but also lightened some areas of the navy section of the scarf. So going forward I will definitely be more careful when working on stubborn spots. On another note, has anyone tried to use some sort of sizing to restore any of their washed scarves to a more fresh from boutique state? I know some of us prefer the soft drape but I love the crisp brand new feel. I apologize if this has been discussed and I have missed it.