I have very dry and frizzy hair that always used to be unruly. This shampoo, in combination with the Marrakesh Kahm Keratin & Argan Oil Daily Soothing Treatment, significantly reduces frizz and restores shape to my curls. I tried other keratin shampoos to cut costs, but I came back to this one because it's the only one that allows me to leave my hair in its natural state and get rid of the blow dryer and straightener.