How to get yellow highlighter off a vinyl doll?

I have a peterkin new born doll that I bought for my daughter for christmas, but need to get yellow highlighter off it, what stuff is the best to use?|||Get some acne cream that has 10% Benzoil peroxide and put the cream on the spot. Put the doll in direct sunlight for a few hours. You may have to repeat the process a couple times but it will take it off.