Whenever one of mine has a poor shed I put them in a small tupperware with a very small amount of warm water (about 1 to 2 cm) and a small washcloth for about 30 min. Make sure the water is warm and NOT hot, also make sure there are plenty of air holes in the lid. After the soak I hold them and the washcloth. At this point they tend to rub off the rest of the shed with the cloth without a problem. Also be aware that there is a good chance you will get pooped on. Warm water seems to be like laxative for herps.