Cat eye nail polishNet content: 7. 5 ml (g ml) Professional use: Step 1. Follow the normal nail art process to clean the nails, and then clean the nail surface. Step 2. Shake the gel polish completely, this can balance the color of the gel polish. (important) Step 3. First apply a primer, which can extend the duration of the gel and cure it with UV or LED lights. (necessary) Step 4. Apply the first layer of black gel directly and cure with UV lamp for 2 minutes or LED