The frequency with which you wash your hair depends on the condition of your hair. Basic guidelines are to wash your hair a few times a week for dry hair, and every day or every other day for oily hair. If you do choose to wash your hair daily, make sure that you are using a pH-balanced shampoo and only wash it once. If you wash it more than once a day, you will be removing too much of the natural oil found in hair. Shampoos that are designed for oily hair have more detergent than shampoos for nonoily hair.
Detergents can make hair less manageable and cause it to lose body.
Shampoo should be more than mildly acidic. Or you can rinse your hair following shampoo with white vinegar and water, or lemon and water. This acid rinse will help to restore a smooth cuticle and shine to your hair. Blondes might try a chamomile shampoo, which has mild bleaching properties. Brunettes might use a henna shampoo, which has mild reddening properties.