Product Name:Nail Repair Essence Efficacy：For the care of cracked and rough nails, nail discolorations, nail separation, which are attacked by nail fungus, and stimulate the healthy growth of the nails. Instructions: 1. Soften nails with warm water. 2. Use a manicure knife to repair the grooves on the nail surface and remove dirt. 3. Apply 3-4 drops of the nail essence to the infected nails. 4. Twice a day in the morning and in the evening respectively. After every 2-3 days of use, polish the surface of the nails and then continue to use.