My wet brush. I used to have an epic battle with my hair every single day of my life in the shower, and now I swipe three times and my hair is smooth. I used to shed an entire matte of hair all over the shower walls and in the drain trying to take the knots out, which was thinning the top of my head; now I barely lose three strands of hair a day. This product I didn't know about until 4 days ago has already changed my life.