Hair can be naturally porous without being damaged.
Since you doubt the answers you got in your previous thread, why don't you have a hair analysis done?? Live Curly Live Free - Hair Analysis
That way, you'll have a "professional" opinion.
3a (Corkicelli), highlighted, fine, low porosity
modified CG, since April '07
CG since 3/11/08
HGs: Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; DM MiraCurls Curling Gelly; UFD Curly Magic; Shescentit LIs; Sevi conditioners; Botanical Spirits Puree, CJ Repair Me