I really don't know the answer to this, my hair is low porosity and LOVES, LOVES, LOVES protein. Pedaheh posted this link to a Curl Chemist article in another thread, which may give you some insight: Porosity and Curly Hair
An important part of the whole equation is getting the balance between the protein and moisture right. You may need to use more moisturizing products.
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