There's a popular hair cleaning regime circulating in the 'green' blogs called the "no 'poo method." Rather than using shampoo, one rinses the hair with a tablespoon of baking soda in a cup of water, rinses with clean water, then does the same again, only with a tablespoon of vinegar.
It might sounds like the recipe for a hair volcano, but baking soda and vinegar work great as shampoo and conditioner substitutes.
How does this method clean hair? There's a more common cleaning routine that only uses vinegar. What is the purpose of rinsing with both baking soda AND vinegar? I'm curious as to whether the baking soda cleans, or whether it simply neutralized the acidity of the vinegar. Is there real chemistry behind it, or is this just an old wives' tale?
(I tried it last night, and it worked pretty well. My hair feels clean and silky, for what it's worth.)