Strengthening nail polish remover. I never use pure acetone on regular nails.
Wrap nail in a piece of paper towel or cotton ball that has been dipped in remover.
Wrap tightly in aluminum foil but not to tightly! Don't wanna loose a finger! Fold access foil over the top of nail.
Leave on for about 5-10 minutes. Take off by squeezing nail bed and pulling up. Remove access nail polish.