Nail Tek Foundation 3 for hard, brittle nails. Fills unsightly ridges and nail damage while healing and strengthing the natural nail. This unique base coat is a special blend of strengthers, conditioners, micro-fibers and natural fillers. Nail Tek Foundation creates a superior surface that greatly increases polish adherence so the manicure that lasts and lasts. Nail Tek Foundation smooths uneven nail surfaces and masks nail imperfections while helping to grow healthy, beautiful nails.