Fallen fingernail

I was helping my Husband and my finger nail tore completely off. I've cleaned it with peroxide , ointment covered it with a bandage. will the nail grow back and what else do you suggest?

Put some vaselenie on and cover the area with a bandage or cotton wool with tape. If you nail tore off easily maybe you need to take vitamin d as it helps you absorb calcium better. Keep your nails short as they are less likely to come off that way.