Bliss 1 Diamancel The Softie is perfect for brittle nails as it gently re-edges & smoothes the skin without causing damage or removing too much length. The nickel-coated fiberglass is electroplated with industrial grade diamond chips to slough away touch dead skin. This long-lasting file is easy to use & will rarely (if ever) wear out. Directions of Use: Use before bathing or showering Wash the file with soapy water & a soft brush after every use