Nail biting is a very bad habit that affects many people. This habit can quickly worsen the appearance of nails and their contour. The Mavala Stop-Pen has been specifically developed to help break the habit of putting fingers in the mouth, and restore and keep beautiful nails. It is an applicator pen moistened with a bitter tasting aqueous solution, enriched with a botanical extract that nourishes cuticles and soothes nail contour. Nails and their contour will regain a beautiful and well-cared for appearance. A handy and nomadic format to take everywhere with you.