I tried coconut oil as a teenager but didn't observe any results. However, for the past 4 months , I decided to try something new and started trying out extra virgin olive oil ( https://www.amazon.com/Great-Value-Extra-Virgin-Olive/dp/B01E0972G6/ref=sr_1_1_s_it?s=grocery&ie=UTF8&qid=1476205591&sr=1-1&keywords=great+value+extra+virgin+olive+oil ) applying it at night and washing it with water in the morning.
From my observations, my hair seems to have become more smooth, dark and thick. I still need to keep observing with time and notice any changes.]