I was having this problem when I was only scrunching in gels- for me, I wasn't getting enough product there. Now, I rake in all my products upside down, and to make sure I get that spot and my canopy, I take another blob of whatever I'm using, rub hands together, and dedicate that blob to my canopy and the back handful of hair. It solved the problem for me. I absolutely have to rake everything in to get good coverage.
2C/ Coarse/ Normal porosity/ SW Florida/ Transitioning to gray
Cleanse: CJ Daily Fix, JC Cleansing Cream, TJ Tea Tree Condish
Condish: JC Too Shea, CJ Curl Rehab (both as RO & LI)
Stylers: UFD CM, CJ PP, JC Spiralicious, Darcy's Cream Gel & Cocoa bean whip