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Short Summary
Main recommendation: Use shaving cream as a homemade anti-fog treatment for car windows, since it performed as well as the store-bought Rain-X Anti-Fog in the video's test. The video also tested potato, baby shampoo, and hand sanitiser, which were less effective.
Key Points
- The host tested five treatments on one fogged window section by section: Rain-X Anti-Fog, shaving cream, a scuba-mask anti-fog trick (baby shampoo), potato, and hand sanitiser.
- Shaving cream and Rain-X stayed clear when the hot-water fog test was repeated.
- Baby shampoo and potato left a visible residue; the baby shampoo felt soapy when humid, while the potato was not soapy.
- Hand sanitiser, which the host noted is alcohol-based, did not prevent fogging and was the worst performer.
- The host's reasoning is that shaving cream is already in most homes, so it needs no special purchase.
Details Worth Noting
- Concrete instructions: Clean the glass first. Apply a thin layer of shaving cream to the whole glass surface with a paper towel, working it in until it covers everything. Then buff it off with a clean, dry paper towel until the glass is clear and streak-free, leaving only a thin film behind. The host notes this takes more effort than Rain-X.
- Concrete instructions: For Rain-X, put product on a towel, rub over all the glass, then lightly wipe with a dry section of towel to remove streaks.
- Concrete instructions: For the potato method, cut a potato in half, rub the cut end over the glass, then buff lightly with a clean paper towel. The host said he had never tried this before and treated it as an urban legend.
- Concrete instructions: Use a thin, streak-free layer only. The host says you should not wipe off the protective layer you have applied, only remove streaks so the glass stays see-through.
- The test method was a hot pot of water used to create steam on the glass, with an untreated control area to confirm fogging.
- The video covers both winter fogging (warm breath and humidity against cold glass) and summer fogging (cool AC air against humid outside air).
Bottom Line
Shaving cream is a cheap, household-available option that matched the store product in this single test, though the video does not measure durability over time.
