I agree with the recommendation for Knot Today (which I still think is the most amazing potion ever created), and recently I'm thrilled with Miss Jessie's Pillow Soft Curls, also sold at Target. The Pillow Soft says it's a styling lotion, but I use it as a leave-in at night after my wash, cover with my silk sleep scarf, and in the morning my hair has hardly any tangles. The Pillow Soft comes in a huge tube, and you only need a couple of tablespoons at a time, so it's long-lasting. (I go through Knot Today in a week sometimes).
3b, Coarse, Low Porosity, Desert Climate
Cleanse: Hair One with Argan Oil, Creme of Nature with Argan Oil , KC Come Clean
Rinse-out: KCKT, Ion Swimmers Conditioner
Leave-in: As I Am Leave-In, Hair One
Style/Hold: Ouidad Climate Control Gel, KCCC, 4 Naturals Spring Back Custard
Refresh: Ouidad Botanical Boost