Barielle One Step Nail Mender Nail repair is just one easy step away. Barielle One-Step Nail Mender's moisturizing formula providing a perfect foundation base coat for your nail polish, while repairing cracks, splits and breaks. Helps smooth unevenness and ridges so that polish goes on smoothly and evenly while allowing nail polish to adhere better. Acts as a protective barrier to prevent nail polish Color from staining your nails. Barielle One-Step Nail Mender can be used alone for a long-lasting finish. .47 OunceHow to UseBrush on 2 coats of Nail Repair as soon as you notice a broken or split nail. Use as often as needed until damaged nail grows out.