spoke to a few hair care professionals to find out the answer and yes, it does matter which shampoo and conditioner you buy.that doesn't mean you can't purchase a cheap option and still get a good product. In general, looking for shampoos and conditioners that avoid harsh chemicals will make people happy. That said, there is something to be gained from premium brands. You'll have to decide whether or not that extra benefit is worth the cost for you. Show More