How do you care for your hair if different areas of your hair are different porosity?

I'm experiencing breakage near the root on the back of my head and I heard it could be caused from being too dry. But it's only in that area, so I did the strand test and it is high porosity in the back, while everywhere else is low porosity. What can I do that will help my whole head? 

1 Answer

You'll have to experience with your hair and see what parts of your hair like certain products and how much.