I'm also low porosity.
Since you like that SM leave in, try Taliah Waajid/Black Earth Products Protective Mist Bodifier. It is slippery, moisturizing & thick like the SM detangler but smells like coconut Italian ice.
PMB costs around $8 at CVS, Sally's, Target, Walgreens & Wal-Mart.
I also use Oyin Handmade Hair Dew & Honey Hemp Conditioner
Curl Junkie Smoothing Lotion & Curl Rehab
Qhemet Biologics Cocoa Tree Detangling Ghee & Moringa Tree Conditioning Ghee
Alikay Naturals Lemongrass Leave in
Alaffia Everyday Shea conditioners, and all three Shea Moisture leave-in detanglers