I have seen a few people say that they use cuticle oil on there hair? What brand/kind do you all use?

There's no point using cuticle oil on your hair, not only is the amount too little but cuticle oil is just made up of the usual ingredients you get in any cosmetic oil; often avocado or almond oil mixed with some other carrier. Just get some coconut oil it will do exactly the same thing and will smell lovely too. When you wash the oil out make sure you put the shampoo directly over the oil WITHOUT water first and work it into your hair, that's very important otherwise you'll be washing your hair for an hour.