Oh dear! I feel your pain. I have very frizzy hair too but mine was located in my crown root area. It drove me mad! What I ended up doing was drenching my hair in moisture. I would deep condition every other day and would always sleep with Hawaiian Silky14-1. Finally after 3 weeks, it calmed down. I wash my hair everyday and I'm sure that was the culprit. Now I cowash everyday and my hair loves the moisture.
As far as your porosity issues, try protein. If you're a natural, maybe just go with protein laden coditioners. If you're relaxed, try Aphogee. HTH