try and brain the pinkie or mouse that worked really well for my friend... its more guesome and takes some nerve but if you want your snake to eat this is a method i highly recomend all you do is take something sharp like an ice pick or anything you can think of and stab it in the head causing the brain to be exposed the snake should then be excited enough to eat it worked first try with my friends snake that didnt eat, with the skin porblem i suggest just not using the medicine it may be allergic or just not good for the snake best of luck to you