* Smoothing: The rough side of the buffer is used to file down ridges and imperfections on the nail surface, creating a smoother, more even canvas.

* Shining: The smoother side of the buffer is used to buff the nails, creating a high shine. This can be done on bare nails, or after applying polish for a more polished look.

Here are some specific uses for a nail buffer:

* Prepping nails for polish: Buffing nails before applying polish helps it adhere better and last longer.

* Smoothing out rough edges: If you've just cut your nails, a buffer can help smooth out any sharp edges and prevent snagging.

* Creating a natural shine: You can use a buffer to achieve a natural shine on your nails without using any polish.

* Removing minor imperfections: A buffer can help remove minor stains or discoloration from your nails.

Important Note: While a nail buffer can be beneficial, it's important to use it moderately. Over-buffing can thin and weaken your nails. It's recommended to use a buffer once or twice a week at most.