My hair does not naturally shine but it is health and has a nice sheen. To combat dryness moisturizing and protective styling is key with 4b hair. My twist outs are shiny and bouncy though my hair has minimal product in it (little conditioner and sunflower oil).
I wash about twice a week twist my hair and leave it alone for about two weeks (transitioning to a twist out during part of the second week). Experiment with it and have fun.
"You Tied that thing up outside?" said Kepler. "What if he got hungry and ate a mailman or a kindergarten class or something? The least you could do is tie a decent knot." Metzger's Dog by Thomas Perry