1First polish the nail surface with the color surface to remove fine lines on the nail surface, and then polish the nail surface back and forth with the white surface to make the nail surface shiny. 2Professional nail files and buffers, polishing will stimulate the blood circulation of the nail bed, thereby helping the nails grow faster and contributing to the overall health of the nails. 3It can remove dry and dead cells on the nail surface, to get a smooth surface and help your nail polish adhere better. 4Made of high quality material, safe and ecofriendly, skinfriendly and wearresistant, stable and durable for use. 5Light weight and in small size, easy to store and carry, can be easily put into your bag, suitable for home and nail salon.