i have been washing my hair daily or every other day for 55 years. my hair is now almost to my waist. i just cut about 12 inches off of it. my hair is healthy, and shiney. i am getting gray and my natural color is not there anymore. it has been replaced by a mousy brown. i have half grey,silver and mousy brown but it shines and i get complements on it all the time. my hair has always been healthy. it went thru the 60's with the hi do's, teasing, and lots of cheap hair spray but since i washed it on a daily basis and used good inexpensive shampoos and conditioners it always looked healthy. maybe i was just lucky. i have oily hair. now i use sunsilk shampoo and conditioner.