I tried the washing-hair-with-baking-soda-and-vinegar-instead-of-shampoo-and-conditioner thing last night, and holy cow, it worked! I usually wash my hair twice with shampoo (it never seems to feel clean enough after the first time...) and then glop heavy conditioner on and leave it for 5-10 minutes, and a brief scrub with a spoonful of baking soda in water and a quick rinse with a glug of apple cider vinegar in water produced pretty much the same effect. Damn! It never would have occured to me to try that...