They are not consistent at all.. few give a great shampoo, some don't even scrub your scalp or get the suds from under your head and neck off. It's kind of a crap shoot... At a blow out bar they HAVE to be schooled on a proper shampoo. Please please please train everyone to scrub correctly. I feel sorry for women with really thick hair that have had this issue there.. Please get your stylists on point. What's the point of a good blow out if your scalp is still dirty?