I am trying the porosity test too running my fingers up the hair shaft ... what does it mean if your fingers don't "catch" on anything but it doesn't feel completely smooth? the end-to-root direction definitely had more friction compared to running my fingers root-to-end, but not enough friction that I would call it "catching" on anything. Does that mean my hair is normal porosity or overly porous? It would be nice if I could feel the "control group" hair for this test so I can compare mine.