Make your own herbal conditioner. I have tried this (or close to this) and can vouch for it. My hair was immediately softer even after the first vinegar rinse (and that was just dilute distilled vinegar). I follow it by rubbing 5 drops jojoba and 5 drops lavendar e.o. between my hands and then stroking my hair. (keeps the static down, among other things.)
Baking Soda Cleansing 1 quart boiling water 1/4 c. baking soda Add the soda to the water and mix or shake until dissolved. Cool prior to use. Apply liberally to hair and scalp, shaking first if necessary. Massage into scalp and hair then rinse well.