#3 Seal Protect: The third step in our dip system is our seal protect polish. This acrylic nail sealer is used to harden the powder and seal all previous coats so the nail can be drilled, filed, and buffed. Get stronger, lightweight and natural long-lasting nails with our easy-to-use dip powder. Kiara Sky dip powder is formulated without harsh chemicals and has added vitamins and calcium to strengthen natural nails. Dip powder can be used on natural and artificial nails.