Description Made from toughened hand cut crystal glass, this file beautifully smoothes & shapes, creating a superior finish to nails. How To Use File from the side of the nails to the centre in even strokes. Always file in one direction, never back & forth. Expert Tips Avoid excessive filing of nail corners as they provide extra strength to the nail. Square or oval shaped nails are recommended. Care Tips Always store the crystal file within the protective pouch provided & keep in a clean, dry place * Clean regularly using soapy warm water * Can be sterilised in hot water or UV light.