Shampoo

Use the shampoo as often as necessary but as infrequently as possible, find the right rhythm for your crown of curls. If you tend to use shampoo more often (e.g. after sports), then concentrate mainly on the scalp and hairline. This cleanses the roots and removes the body's own grease without drying out the ends (the oldest hair) too much.  
Always finish with conditioner in the shower.