When shampooing, wet your hair by putting your head under the stream of water and work the water into the hair with straight downward strokes. Pour the shampoo into the palm of your hand, not onto your head, and begin working it into the ends of your hair, moving up toward the crown of your head. Do not scrub at your hair or bunch it up on the top of your head.

When you are ready to rinse, put your head under the stream of water and work the shampoo out of your hair with straight, downward motions of your hands. Keep the hair straight and untangled at all times. (Always make sure you have no tangles in your hair before you get into the shower to shampoo.)
Follow the same downward techniques when gently drying your hair with a towel. Wet hair is very fragile. Pat or squeeze your hair dry with an absorbent towel and then allow the hair to air dry. Avoid wrapping your wet hair in the towel or pushing it up in a turban. Let it hang drown as it dries, perhaps sitting in front of a gentle heat or air source. (Always be aware of where your hair is and never allow it to wander into a heater or fan. Longer hair requires you to be more attentive to your surroundings for your own safety sake.)