Paul Mitchell makes a great one, I used to use it ALL the time when my hair was permed. It's just called "the Detangler" I think. Works wonderfully! This is the kind you rinse out, I have yet to find a good leave-in that I like.
Biolage Daily Leave-in Tonic. It's the only leave-in conditioner I use on my clients with fine hair (I also use it myself) and it's the best I've found that does not weigh down fine or thin hair.
Physique Amplifying conditioner is very good as long as you use a very small amount and rinse it out well.
My hair is shoulder length and very fine and thin and tangles easy when I shampoo. I use about 1/4 teaspoon.
Detangler? 
Linear Mode
