It's interesting. The only place I've read about low porosity hair not liking protein is on, which is why I never give out that link. My hair is fine and low porosity and never met a protein it didn't like.
3a (Corkicelli), highlighted, fine, low porosity

HGs: Anything Sevi; Curly Kinks Satin Roots, Curlycue ReNew and Coil Jam; homemade FSG and okra gel; soap bars; UFD Curly Magic; Botanical Spirits Jellies, CJ Repair Me, Aloe Fix