It's weird, but an oil can be organic and still be refined. When you see organic, think about the overall process in terms of lack of chemicals or pesticides. When you see refined or unrefined, think in terms of heat. The more refined an oil, the more heat which is used. You can basically deplete an oil of its wonderful properties if enough heat is applied. One oil, namely macadamia nut, is unique in the fact that no matter how refined it is, it's properties remain intact. However, this is the exception by far.
Rosewater, just like jasmine water, tea tree water, etc, is called a hydrosol. It's a portion of what remains after an essential oil has been extracted. These are WONDERFUL and very NOURISHING to your hair, especially if it needs extra moisture. I've used these on my hair for years and consider them such a treat. Some places will sell concentrated versions by the gallon where you can dilute them further for your own purposes, including skin and hair care. For your hair, they generate a ton of softness and shine.
Rosewater and jasmine water are two of the best for dry hair. If your hair is natural, feel free to spritz throughout the day, especially if you are lucky enough to be an Andre 4. A friend of mine does this and her corkscrews are luscious. I am an Andre 2b and I like to use hydrosols as rinse, like I would use a vinegar or herbal rinse.
The key with the hydrosols is to remember the original properties of the essential in terms of your hair. If your hair is dry, rose and jasmine are great as I said. If your hair is oily or somewhere in between, you might like something like lime, tangerine or even lemon. I've used tangerine and it's actually quite moisturizing and the smell is DIVINE. With the tea tree, if your scalp is feeling a bit sensitive, it works very well PLUS it adds a wealth of shine. Most hydrosols do.
Hope this helps,
Jade