I had extremely long hair for 18 years... always waist-length or longer. I just got it chopped to shoulder-length about 3 months ago.

Before I bleached it, I had to wash it everyday because it got greasy. My hair was naturally very shiny. I didn't have to use conditioner or any shine products on it... before I started dyeing and bleaching it 3 years ago.

After I bleached it, my stylist recommended only washing it with shampoo once a week... diluting the shampoo (1/2 water) and using it only on my scalp and then using lots of conditioner and following with a shine serum (I used Redken Glass).

Since I'm a smoker (and can't stand the smell of smoky hair) and was used to having nice-smelling hair from washing it everyday, she told me to do a conditioner-only wash most days. I would just use a little bit of conditioner instead of shampoo. Most conditioners contain a small amount of sodium lauryl sulfate, the same cleaning ingredient that most shampoos contain... so they clean the hair and leave it smelling fresh, but don't strip out the oils. I also brushed my hair (once it dried) with a Mason Pearson boar bristle brush. It's great for getting your hair really shiny -- working the natural oils through the length of your hair. Mason Pearsons are very pricey (mine was about $200). If I hadn't gotten it as a gift, I don't think I ever would have paid that much for a hairbrush. I'm glad I have it though. It's an awesome brush.