You should avoid shampoo and conditioner that have any type of silicones, like dimethicone. They really cause build up and hair to seem greasy and are in many popular brands, both high and low end. You can find lists of shampoo and conditioner without them on the web.Ihave the worst luck with shampoos & conditioners. everything is too heavy and weighs down my hair. i've had the best luck with livingproof but if i use it for too long, my hair goes to crap all over again.anyone have suggestions for lightweight shampoos & conditioners? i'm so sick of look like a grease slick when whatever i'm using decides to stop working.