I'm coarse and low porosity as well. The whole issue is that our shafts are closed down so it difficult for moisture to get into our hair so that when we moisturize (seal) with things like QB, etc there's really no moisture for these products to lock in. The solution is revising your conditioner regimen, particularly your leave-in's to give you enough hydration so that when you do moisturize it can do its job which is to prevent moisture loss via evaporation.
3c with some 4a highlighted
Low porosity thick/coarse texture. nml elasticity
No rules, just happy hair
Cleanse: CJDF, Prell, LUSH Curly Wurly, Bobeam
BBB, CJ, SheaM, HEHIS, Garnier, KBN Shealoe, CD Chocolat, Oyin HH
CJ, CR, UFD, Zuresh, Ecostyler,MJ
PT/DT: BBB, CJ, Lather