They don't necessarily LIKE being put into a tub of water. Make sure the tub is big enough - for a hatchling a plastic shoebox should be ok, for an adult a 32 qt tub would work. About an inch of 80-85 degree water. Be sure there are ventillation holes. Put the snake in and put the lid on. The snake will try to find a way out for a while, maybe the whole time she is in there. Leave her in for 30-45 minutes. She may be feisty when you take her out. Then you can use a damp bath towel (again, should be warm). Let her "hide" in the towel, and very gently rub the retained shed off. Alternatively, you can skip the soak in the tub, and just use the damp towel. Get the towel more wet than damp, and let her hide in it (in your lap) for about a half hour to loosen the shed before very gently rubbing the shed off.

With it being on the head, you may have to be kind of "sneaky" about it. Don't just reach for her head with the towel. Let her hide her head in the towel, and slowly and gently put pressure on her head. Make it seem as though SHE is rubbing against the towel instead of the other way around. This will help to avoid the "head shy" problem. Be sure to work from head to tail, the other direction will lift her scales.

Steve