i try to do it once a week, but somtimes i go a month before i do it again. i add tones of other herbs to mine, this helps a number of different things, encluding shine, strength and helps with growth and any scalp problems. i guess i would use about a cup of water and table spoon vinegar. i dont rinse it out it does smell a bit but the smells gone when my hair is dry.

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.