For Weak, Damaged Nails - Nail Tek Foundation 4 Ridge Filler is for weak, damaged nails.Foundation formulas fill unsightly ridges and nail damage while protecting the natural nail. A unique base coat features a special blend of strengtheners, conditioners, micro-fibers, and natural fillers that smooth uneven nail surfaces. As the condition of your nails improve, choose the Nail Tek formula 1, 2 or 3 that is right for you.Clean and prep nails with Nail Tek Crystal File. Treat with one coat of Nail Tek Foundation as a base coat. Polish nail at the half moon, keeping product off skin. Be sure to keep all nail products away from the cuticle and skin as they may cause dryness. Color with two coats of your favorite shade of nail polish. Protect with one top coat of Nail Tek Strengthener. Apply the appropriate Nail Tek Strengthener formula daily for 7 days to reseal and protect free edges. After one week, remove all polish with a non-acetone remover and begin the steps again.