Does petroleum jelly make your hair grow?

I've been medicating my scalp with it for about 3 nights now after I got my relaxer and wrapping it up at night. I've noticed it's gotten more healthy looking, and softer. This girl in my class even came up to me feeling my hair saying "It's so soft!". So will the petroleum jelly make my hair more thick or even longer? Should I continue the scalp medicating or should I find something better for it? If so, any suggestions? Thank you so much.