I do mine with a little over a T of brown sugar and a T of olive oil and some drops of rosemary.
I also do it on dry hair. I scrub fairly hard because I do mine for flakes and itchiness. I've never had a burning sensation!
Coarse texture, normal-high porosity, normal elasticity (Komaza Care), very weak waves
shampoo: Redken Fresh Curls
rinse out: Elucence, CJ Curl Rehab
leave-in: SM Milk, Oyin Hair Dew
jellies/creams: UFD's CM, CJ CCCC
gels: CJ CQ, BRHG, CJ PP