Always file your nails when they are dry. Move the file gently over the surface, keeping the direction: from the outside to the centre.
Glass Nail Buffer.
Move the buffer with gentle pressure and a steady motion. With two gentle strokes draw a little ‘X’ on the surface of your nail. Don’t overdo it: frequent polishing can damage your nails.
For optimal use soak your cuticles in luke-warm water. Use the flat end to push the skin. Use the sharp end to remove dead skin. Take care: gentle motions and light pressure are key to avoid scratching and damaging your nails.