Sally Hansen Miracle Nail Thickener Fortifiant is a high-quality nail treatment that helps strengthen, reinforce, and smooth nails. With its exclusive calcium and ceramic gel formula, this treatment fills in ridges and imperfections, leaving your nails looking healthy and shiny. Measured layers of nail protection are built up, creating a hard shield that protects against bending and breaking. In just 4 days, you can get up to 70 percent thicker nails, making this treatment perfect for those who want to achieve stronger, harder nails. The clear color and 0.45 oz size make it easy to apply and perfect for on-the-go touch-ups.