I've not had my hair evaluated, but all along I was thinking my hair was low porosity (I did my own test and hair floated in water)...but I don't have problem with wetting my hair fully/ my hair dries quicker than most and after diffusing & and 1/2 hr. of of air drying, it's 100% dry by the time I leave the house in the morning. Some products do increase dry time, but still it's nothing like what some of you experience. Thanks for all the great info ladies! I must be middle of the road/ medium porosity then?