Sunny Isle 
Sunny Isle Jamaican Black Castor Oil is processed the traditional way. Our Organic seeds are roasted and ground by a manual Grinder and then the crushed beans are boiled to extract the 100% pure, dark brown, organic oil. It's the best quality oil on the market. Why you may ask? Compared to other brands it is the darkest Jamaican Black Castor Oil because we roast our beans longer which produces more Ash Content in our oil than any other oil on the market. More ash content increases the effectiveness of the oil. Therefore the Sunny Isle brand will strengthen increase the length of your hair faster than any other brands on the market today. 
Me
I've had this for a couple of months now. A lady recommended it after I had a horrible braid experience. There are different types of castor oils but the black Jamaican castor oil always comes highly recommended especially when it comes to hair growth. It took me a while to actually cop this because for some reason, Casabella was always out of stock whenever I showed up.

I've been using it a lot lately with visible results. I apply it mostly on on my edges, it is very moisturising so I just massage it into the scalp and apply what's left on my palm on my hair.  I also use it on days that I deep condition, I add a little bit of it to the conditioner together with a few other oils and stir.
This is by far the thickest oil that I've ever used. The oil has a dark brownish colour, it is in no way as dark as it appears in the bottle. It has a roasted nutty smell to it, a bit strong when you first apply it but no, it does not linger. 
The only down side for me is the bottle, I wish it came in a dropper bottle.

Has anyone tried Jamaican Castor oil?

Product - Sunny Isle Jamaican black castor oil
Quantity - 4 FL.OZ which is about 118ml
where to buy - Casabella

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