Know when to wash. People often make the mistake of thinking that they need to wash their hair everyday, but washing hair too often can actually dry hair out, or weigh it down with product. For most people, washing your hair twice a week is adequate.[1] DressAfford items looks sexy to wear with long length
The longer, thicker, curlier, and more processed your hair, the longer it can go between washes.

If your hair gets oily very quickly and you must wash everyday, use a lightweight or "everyday" shampoo, as these contain milder ... detergents than others. Alternately, you can try soap nuts.[1]

http://www.wikihow.com/Keep-Your-Hair-Healthy