For decades old school artists told their clients to use Vaseline and no one ever had damaged tattoos because of it. Some of the legends still say to use Vaseline. It depends on who you were taught by, and what their experiences have been. You caould ask 10 people and get 10 different answers. The Vaseline doesn't withdraw ink from it, it just clogs pores if applied to thick. Neosporin on the other hand can pull ink because it thinks the ink is a foreign subject in the skin. Vaseline is fine in very small amounts. To keep your tattoo moist until you get something else, you'll be fine.
Shop owner, in the business 14 years.