So are you saying that the rest of his body has shed but his tail hasn't completed shedding or it just looks like he is beginning a shed? If he has shed and he has some constricting his tail I would put jojoba or some other oil on it to keep it soft. If there is any sign of constriction I would bring him to a vet to intervene. One of my leaf cham's had this problem with her foot - don't hesitate!
Misting can help but if he always have problems shedding your overall humidity level may not be sufficient. I am no expert, but when I saw no one else had answered I figured I had at least this much to say 
lele
>I noticed on my male chameleon about 4 or so days ago that at the base of his tail and down to the tip, it looks like its ready to shed. But as of now there has been no shedding and it looks the same. I guess im worried about the skin not coming off and cutting off circulation to the tail. What can I do to help? I have been spraying every day, directly on the tail too, but it seems to make no difference. ( he has always had probs shedding, small bits will continue to stick on him after shedding)
>>Any advice would be helpful please! Thanks!
>>Erin