Rash from vitamin E ointment?

I got a tattoo on my shoulder a week ago, and as per the instruction, I have been putting on Webber's Vitamin E ointment around 3 times a day. It's healing up nicely and very fast without infection, however the surrounding skin (the skin that is not tattooed or close to it but that ointment incidentally gets on) is starting to develop a rash. It only happened yesterday, my skin was fine all the days prior. What could be causing this? Idk if it's allergies if it only happened so recently after using it without trouble for several days.