Here's why:
* It's not sterile: Fingernail polish is not designed to be sterile and can introduce bacteria into the wound.
* It doesn't protect from infection: It doesn't create a barrier to keep out dirt and germs.
* It can irritate the wound: The chemicals in nail polish can irritate the skin and delay healing.
* It can trap moisture: This can lead to infection and make the wound worse.
Always use a proper bandage for any wound, no matter how small. If you're unsure about wound care, consult a medical professional.