I have used lots of sprays like this, but keep coming back to this one. A staple in my haircare routine.

Pros:
*Doesn't make my hair greasy or oily.
*Protects hair against damage.
*Doesn't have a bad smell.
*Can use it a couple of times before I have to wash my hair.
*Can be used for blowdrying, straightening and curling. Therefore you don't need a product for each.
*It doesn't weigh your hair down or make it lifeless.

Cons:
None!

A tip that works for me is to not spray it directly onto my hair since I find that it does not apply evenly. I therefore spray a generous amount into the palm of my hands, spread it onto my hair and brush my hair with a paddle brush. This seems to be working for me.