How often is it really necessary to wash your hair? I'm about two weeks overdue for a haircut, but letting my hair grow a little longer has made me notice that it looks and feels better if I don't shampoo it every day. I still give it a rinse, and massage my scalp, but skip the shampoo. I have a full, luxurious head of hair, and have been a daily shampooer all my life. Now I find that my hair is like dry straw after a shampoo, but is more manageable and softer if I skip the shampoo for a day or two. Are there any concerns with not using shampoo so often?