After 2 months of use on the hair of my daughter that are thick and curly (the hairstyle morning was torture accompanied by screams and crying), this brush was relegated to the closet and in the spring a little speed moments when we did not have time to sort out all good. Indeed, this brush is more effective at 1st but uses fast abyss (the pins are twisted). It only unravels the surface and is not quite "deep" to unravel the thick hair. Would recommend for hair less rebellious and easier to style at the base.