What are the metal balls in nail polish for?

I'm doing my nails and just realized that ';tink tink'; sound when i gently shake my nail polish.





What are those metal things for?What are the metal balls in nail polish for?
Most nail polishes will settle a bit when they sit, especially metalics and frosts. The metal balls mix the ingredients up so that the fine metallic glitter is evenly distributed on your nails.





By the way, don't shake nail polish, it will introduce little bubbles that will make your nails look bumpy. Instead, gently roll the bottle between your palms to mix it up, then let it sit for about a minute before using.What are the metal balls in nail polish for?
just to shake up the polish before you use it.
it helps to shake it up well
The little metal balls just help mix the finger nail polish up when you shake it.
It helps shake the nail polish up.