We guarantee up to 70% thicker nails in just 4 days! bonds and seals thin, soft nails instantly. By creating a hard, protective sheild that helps prevent bending and breaking, the unique Calcium and Ceramic Gel formula instantly seals and strengthens weak and fragile nails. Ridges and flaws are filled in by the fortifying treatment. Put one coat on your bare nails. Apply every day for up to four days if your nails are extremely thin. Apply as a base coat or on its own.