2 tablespoons vinegar
2 cups water
Shampoo hair and follow with a conditioner. Use this solution as the final rinse (don't worry, your hair will not smell of vinegar). It will leave your hair soft and shiny.
Why it works: Vinegars has high acid content. It cosmetics, vinegar is used to remove alkaline residues (most shampoos and soaps have alkaline to effectively clean the body) from both the skin and hair.