no you need tanning oil
Be careful. Skin cancer is a very real risk of tanning. You should at least use a very light sunblock when you tan.
Vaseline is grease. It helps to keep the skin hydrated. It will not give the same protection as a good sun tan oil. (that's probably why you tan faster with it)
Composition. Vaseline is a mixture of hydrocarbons that was developed from petroleum. Robert Chesebrough refined and patented the process of manufacture...