DetailsUp to 70% thicker nails in 4 days. Guaranteed! Instantly bonds and seals soft, thin nails. Exclusive Calcium and Ceramic Gel formula instantly seals and reinforces weak and fragile nails by building a hard, defensive shield that helps protect against bending and breaking. The fortifying treatment fills in ridges and imperfections. Apply 1 coat to bare nails. For extra thin nails, apply daily for up to 4 days. Use alone or as a base coat.