I bought this after reading its many great reviews. I had super frizzy hair so I was looking for something that would make my hair less frizzy. I noticed the results as soon as I put it in my hair. It smoothed it out and made it shiny. After around a week of using Moroccan Argan Oil, I noticed my hair was slightly greasy, but did not think much of it. After two weeks, my hair was getting really greasy, I then realized that it was from the argan oil. I decided to use less of it, and some of the grease went away, but most of it was still there. I started blow drying my hair after using it, and only using it every other day. The grease finally subsided and my hair was shiny, but not greasy. It sure does work, just don't use too much of it like I did or you will have greasy hair. Overall, I think this stuff is great for your extremely frizzy hair! It is worth recommending to everyone! As always, good luck!