I've been having this problem myself lately. My hair just didn't feel silky anymore. So, I used Activate Straightening Cream and the problem has gone away for now. I'm absolutely sure that I just needed a little of that amodimethicone in there. My hair has been defined and UNtangly in that area ever since.
I'm a 3b, with 3c underneath.
Used to be CG, now I'm not. Using Suave Aloe & Waterlily shampoo & condish, JoiWhip, BRHG, Suave Aloe gel, Aussie Tizz No Frizz, and anything else that looks good!