Try and experiment. Alot of people apply their leave-in Coconut Oil on wet or damp hair, others find Coconut Oil on dry hair works better for them. I usually add a bit more if I know ill be wearing my hair up for the next few days, and it doesn't matter too much if it gets a little too oily. Having said that hair usually soaks Coconut Oil up pretty well. Enjoy and good luck with the holy grail of Hair Oil :)