So glad you asked! I'm a 2c/3a low porosity also & just started using SheaMoisture Raw Shea line (the yellow label) out of desperation due to protein damage (I know better than to use protein but did anyway....).
It really turned my hair around, crunchy hair is now soft again, amazing curl definition & was actually able to do a co-wash that turned out better than cleanse day.
I think this is going to be one of those products that gets better w/every use...keep ya posted.
The key was picking the Raw Shea line (no protein) and only using distilled/bottled water that is good & warm, this helps low porosity hair open enough to let the oils do their work.