Miracle Nails Super Nail Hardener is a sensational holistic cosmetic product. Miracle Nails Super Nail Hardener is made almost exclusively of substances that grow in nature. The addition of diamond powder helps to strengthennails and encourage growth. It is very easy to use and only takes a few minutes to apply.Miracle Nails Nail Hardener should be applied to unpainted nails in the same way as nail varnish once a day for 14 days. After every third day of application, the nail hardener should be removed with Miracle Nails Nail Varnish Remover and applied again. Miracle Nails Nail Hardener is an excellent base coat and ensures long-lasting regeneration.