found at Amcal
Stop 'n Grow is invisible, colourless, odourless and it tastes terrible! It tastes so terrible that within 3 weeks your nail-biter will be on the way to losing the habit! Continue to use at least 3 months after your nail-biter has broken the habit. Once the habit's broken, to promote strong, healthy growth and protect nails from chipping, flaking and splitting, there's Nail Hardener by Stop'n'Grow. Stop'n'Grow and Nail Hardener - a total program of nail care and protection.