My favorite leave in is It's A 10 Miracle Leave In. It's pricey, but it's the best leave in I have found thus far. Plus it helps with strengthening my hair as well.

I do also own Giovanni Direct Leave In as well. As that's what I had been using on and off before purchasing It's A10. I still do use it sometimes. It's an all natural product made with a lot of organic ingredients with in it. And, with this product a little bit really does go a long way.
3B, low density, high porosity hair

SM Curl & Shine Shampoo
SM Curl & Shine Conditioner
SM JBCO Leave In Conditioner
Carol's Daughter Hair Milk Cleansing Conditioner
Marula Oil
Argan Oil
Coconut Oil
JBCO
Mixed Chicks Leave In Conditioners (Adult & Kids versions)
Camille Rose Naturals Curl Maker
Camille Rose Naturals Curlaide Moisture Butter
Camille Rose Naturals Almond Jai Twisting Butter