From what you've said it sounds like low porosity hair, so try treating your hair as such and see what happens.

Might be worth getting a hair analysis though, just to be sure
3B. Med porosity. Med thickness. Med density.

Low-poo: Shea Moisture Coconut & Hibiscus
Conditioner/co-wash: Jason Moisturising Aloe Vera

Leave-in: Aunt Jackie's Curls & Coils Quench Moisture Intensive
Refreshing: TRESemmé Naturals Nourishing Moisture Aloe Vera & Avocado
Gel: Ouidad Climate Control Heat & Humidity
Treatments: Once a week, alternate between Coconut Milk and Coconut Oil before washing

UK curly. CG since Oct 2013.
Growing my hair out Rapunzel-style