It could be that not all SM products have protein either. The only SM products I've tried (and disliked) was the Smoothie and I'm pretty sure that had protein.
Coarse texture, normal-high porosity, normal elasticity (Komaza Care), very weak waves
cleanser: Redken Fresh Curls Shampoo, CJ Daily Fix

rinse out: CJ Beauticurls, CJ A&OO, CJ Smoothing

jellies/creams: Mop C, KCCC, SCE FSG
gels: CJ CQ, BRHG