I have long hair down my waist and I wash it every night. I find it behaves better when I wash it at night, blow dry right away, and let it cool completely (1 hour) before going to bed. I don't even need to brush in the morning. A major benefit of being Chinese, I guess.
Most Chinese I know wash their hair twice a week. Smells terrible! That oily smell... I can't stand it. Looks alright from a distance. They will tell you that washing it less frequently makes your hair look that good, but it really doesn't. Some will tell you that washing it so frequently will give you headache, that's when you know they are insane.
Everyone says I have really nice hair. My secret is to eat well. Nothing beats a healthy
diet to looking good. I only ever eat real food. The kind that doesn't come in a box, and spoil within days.