After reading many positive reviews on this product, I am also launched: fast delivery, well packaged product and HOLDS GOOD HIS PROMISE. It untangles hair well, makes them soft and shiny. But I do not put 5/5 because sometimes it happens that the brush comes across a "difficult" node and it takes a little ... Despite this, nothing to do with conventional brushes, this innovative brush is so much nicer! I recommend with pleasure and I hesitate to even buy another one to put in my bag ... :-)