I have used organic castor oil for years, but never with these results. I first went to black castor oil after reading up on it. I tried two brands before this one. One had no scent and a thinner consistency, ad the other had other oils added to it to give it a flower-like smell. I gave each a fair amount of time, three months. Neither worked as well as this one!! This is by far the best castor oil I have used. My nails are thicker and stronger than I have ever experienced! They did grow faster with the other castor oils, but this brand actually gave e nails strong enough to last!! My hair is growing faster, and looks healthier than before!! I will say that there is an odor to this one, so if scent matters more than results try another brand. Mixing scented oils in also works well. The results are well worth it!!