Chamomile, calendula, comfrey, chickweed, plantain leaf, and slippery elm bark are all fantastic herbs for healing itchy skin.  I would suggest infusing a few of these herbs in a base oil, then mixing it with some aloe vera (which reigns supreme for alleviating itchy skin) and adding a few drops of pure lavender essential oil.  Apply this on your skin like you would a lotion.  You can also make a salve out of the infused oil and add the essential oil and aloe.  I don’t think I have a post up yet about how to make salves, so here is an incredibly informative video on how to make them: http://www.youtube.com/watch?v=RqDq_VnZ8Ok