How to prevent my face shield on my snowmobile helmet from fogging up

Written by cassandra tribe
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How to prevent my face shield on my snowmobile helmet from fogging up
Commercial defoggers can fill your helmet with fumes (Latina rider image by Leticia Wilson from

Anyone who has tried to wear a snowmobile helmet knows that having the face shield fog up, no matter how fog free the design of the helmet, is a common problem. You can buy any number of commercial fog-free treatments for your face shield but not only can that be expensive, a lot of them are no better than a tried and true home remedy for fog prevention. Prevent the face shield on your snowmobile helmet from fogging up using a simple item found in your kitchen.

Skill level:
Moderately Easy

Things you need

  • Window cleaner (no ammonia)
  • Soft lens cloth
  • Knife
  • Cooking potato

Show MoreHide


  1. 1

    Spray window cleaner on the inside and outside of your face shield and wipe dry with a clean lens cloth. Be careful not to use any type of cleaner with ammonia in it or the fumes from the ammonia will linger in your helmet. Make sure the shield is completely dry before continuing.

  2. 2

    Cut a cooking potato so you have several slices that are easy to hold yet thick enough that they will not break (about a 1/4 inch thick).

  3. 3

    Rub the white of the potato over the inside and outside of the face shield. You will be able to see where you have rubbed because the starch from the potato will leave a white film. Make sure you completely coat both sides of the shield and set it aside to dry for about 1/2 hour.

  4. 4

    Use a clean lens cloth to buff the shield until it is clear. Keep checking the shield by holding it up and looking through it to make sure it is clear and there are no swirl marks left from the potato coating. When you have buffed the shield completely clear, you are done.

Tips and warnings

  • Prep the face shield the night before you plan on riding so the potato coating has enough time to dry before you buff it clear. If you are pressed for time, the window cleaner coating is enough to prevent your face shield from fogging for at least a day.
  • Reapply these steps on a bi-weekly basis as the potato coating will breakdown over time. Otherwise you run the risk of having your face shield fog up again when you least expect it, reducing your visibility and increasing your chances of an accident.

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