A. Due to dehydration and lack of nutritional support, our nail and nail plate can become weak and brittle, resulting in dull nails. In such conditions, nails often break often and are fragile. To ensure that your nails are heathy, shiny and grow faster, you should try using products without many chemicals and ensure that your diet includes nutritional supplements that help in life and health of nails. Make sure you moisturise your hands regularly and keeps your nails clean. Dirty nails are another sign of unhealthy nails.