yes i always seal. i mix oil and condish in the palm of my hand, rake it in and once its not dripping wet, i seal with a different oil as i used with my condish, then after an hour or so i do my scalp message. this has worked GREAT for so long.

my hair: 3b, high porosity, high density and coarse hair (i think i finally figured that all out)
my hair loves conditioner only styling!
Oils and my own procuts are my hairs best friend
my hair goal length is bra strap length when curly.