If you are looking for a very inexpensive way to give life back to your lifeless hair, try out Garnier Fructis Fortifying 2-in-1 Shampoo + Conditioner. For about $4, it cleans up build up, volumizes and shines while conditioning.
I don't think this is a good shampoo. It is cheap. But it was rated very poorly for the chemicals it contains on the cosmeticsdatabase.com. You can see the rating at: http://www.cosmeticsdatabase.com/product.php?prod_id=97718