Stop amp grow stop bitinguse stop39n39grow39s unique double acting formula to help you stop biting your nails for good odourless and colourless its extremely bitter taste immediately deters any nibbling within three weeks your nails will be longer and look more attractive so rather than hiding your hands you39ll want to show them off stop39n39grow can also be used to help men and children of 5 years to break their nail biting habit