What porosity test did you use? I did one as well, and mine said low porosity. But in reality, I have high porosity hair. you may want to check the test, they're not always accurate. Btw, I have this problem as well. I've found for me, If I take a little gvp conditioning balm and emulsify it with water (going to experiment with AVJ next) and apply a little daily to my my hair, it works. Also olive oil before pineappling bed works. & I've noticed since I started shampoo free method, my hair is more moisturized. Also, if you wear a satin bonnet or use a satin pillow case, it helps.