To wash black hair with baking soda and vinegar, mix 1 part baking soda with 3 parts water to form a paste. Use about 1 to 3 teaspoons of baking soda depending on your hair length. Apply the mixture to your dry or wet hair. Keep it in your hair for about three minutes, and rinse it out. Finish rinsing with a mixture of 1/4 white or apple cider vinegar to water.
Before applying the baking soda and water mixture to your hair, part your hair into four sections. Apply the paste from the hair roots to the ends, and gently scrub your scalp. Do not use hot water to rinse your hair; it is suggested that you use cold water. The cold water helps to close the cuticle and seal in moisture, which makes your hair look shiny, smooth and healthy. You can also add lavender, peppermint or any essential oils of your interest to minimize the vinegar smell.
Washing hair with baking soda and vinegar is an alternative method to shampooing and is one of the "No Poo" methods. No Poo, which means "no shampoo," is a term for trending methods of washing hair without commercial shampoos. Proponents of this practice believe that shampooing damages the hair by causing a cycle that excessively removes natural oils produced by scalp and in turn makes the scalp produce more oils. However, there are several controversial arguments about whether baking soda and vinegar could damage the hair.