<human>: Objective: How to remove the fog from a mirror?

Which of the following solutions is more sound in terms of naive physics reasoning?

OPTIONS:
- When wiping down your mirror use a shaving razor  it will make it "fog proof" for a few weeks.
- When wiping down your mirror add shaving cream, it will make it "fog proof" for a few weeks.
<bot>: When wiping down your mirror add shaving cream, it will make it "fog proof" for a few weeks.