There are a few things you can do to clean a razor blade before cutting:

  1. Soak the blade in warm water for a few minutes. This will help remove any built-up oil or dirt on the blade.
  2. Use a mild soap and water to clean the blade, making sure to get all of the dirt and oil off of it. Be careful not to damage the blade by doing this.
  3. Dry the blade by rubbing it against a piece of paper or cloth. This will help remove any excess moisture from the blade and make it easier to sharpen.