The strand test IMO are effective to a degree. The best way and the simpliest for me was a shower test. Does the water from the shower sits on your hair, be absorbed after time, or wets your hair immediately?
I'm high porosity but denimpixie on youtube is low porosity and her blog "quest for the perfect curl" is awesome for advice.
Sent from the mytouch 3g slide. Spell check does not compute.