The nail is made out of 3 layers of protein molecules, connected to each other by Natural Moisturizers. They make the nail supple. In the perfect nail you find 82% of protein-molecules and 18% of Natural Moisturizers. Most nail hardeners will just glue the protein-molecules together, leaving no space for the natural moisturizers, and nails become brittle as a result. Trind Nail Repair tightens the protein-molecules while leaving space for the natural moisturizers leaving nails stronger and healthier.