What is the best moisturizer for long hair?

I have long hair but it is dry and brittle. I use hot oil once a week, use both infusium and pantene conditioner daily or every other day. But i still have to put some smoothing cream in it when it's dry, hoping for a healthy, non-brittle feel.What is the best moisturizer for long hair?
I've been battling this uphill battle for years now. The only solution I have found is to use Paul Mitchell's leave in conditioner after every shower. Pantene isn't the best conditioner its basically like putting liquid plastic on your hair trust me. Try the new line of suave that is just like the professionals either the bio basics or the humectant. Or use a more expensive brand Biolage. I strongly recommend these brands. Also its good to switch up after each bottle is used, it gives your hair the change it needs. Definitely use a leave in conditioner if not Paul Mitchell try another brand but you may find that he has one of the best. Good luck. Hope you find something.What is the best moisturizer for long hair?
african safari moisturizer
My hair is to my waist and looks very healthy because of Kerastase Nutritive Serum. It does wonders in maintaining the moisture and keeping it healthy and frizz free.
Use a the 'Pantene shiny and smooth' or 'Finnesse soy protein.' After your shower wrap you hair up in a towl to lock in the effects of the shampoo.
My mother has long (waist length) and color treated hair, she uses Pantene Complete Moisture every day and a Pantene treament once a week (not sure of the specific type) and her hair is very healthy! She also doesn't over dry it. Perhaps you're blowdrying it too much, or something else is being done to it too much?
I use Cowboy magic detangler plus shine. it works really well on my long frizzy hair.