The only shampoos that make my hair feel clean. I have noticed that whenever I stop using it and switch to other common shampoos, I develop intense dryness. With 2-3 washes using head & shoulders, regardless of the scent, my scalp returns to normal. The only downside is that it dries out the hair and, in combination with hair dye, makes it look like straw, so I always use conditioner (not from the same brand because it's like the shampoos).