I agree with the layers theory. I have the same issue that my back curls get more weighed down and aren't defined. I wonder if maybe you are not getting enough product into the back. I decided to experiment myself with that and really focus on the back. When I did that I noticed more defined curls. So maybe the next time you add your products pay special attention to that area.
Medium, high porosity, thick density, & normal elasticity, *mod cg* 3b/c
Shampoo: Giovanni's TTT Shampoo
Detangle Cond: Suave moroccan cond.
Leave-In: Cantu Shea butter
Sealer: SM Elixir
PT: *IAGirl's PT or Giovanni's Smooth as Silk
DT: Aussie's moist 3 minute miracle
My Current Hair