“There's a reason that shampoo bottles tell you to rinse and repeat. And no, it isn't just to make you buy more shampoo. Of course, in this day and age, when hating all things corporate is "cool," it's easy to write off this advice as shameless commercialism. But if those Herbal Essences commercials have taught us anything, it's that the shampoo manufacturers of the world want nothing more than to ”