She applies a thin layer of shaving cream to the window pane and then polishes it off with a clean, dry cloth. This leaves an invisible coating that prevents condensation. The effectiveness of this method lies in its simplicity: no need for advanced gadgets or chemicals, just a jar of shaving cream and a few minutes of your time.
3. What you’ll need: Only simple household items
To try this trick for yourself, you’ll only need two things: a jar of shaving cream (preferably the foaming type, not gel) and a clean, dry cloth. It’s important to use a gel shaving cream because the gel versions don’t contain the same amount of stearic acid, which is crucial for creating the moisture barrier.
These items are probably already in your bathroom, making this trick both convenient and cost-effective. You don’t have to buy anything extra or special, the process is as simple as possible.
4. The 4-minute method step-by-step
Here’s how you can copy my grandmother’s method in just four minutes:
1. Start with clean windows. If they are dirty, wipe them with a damp cloth and let them dry completely.
2. Shake the jar of shaving foam well and apply a small amount (about the size of a golf ball) to your hand or directly to the window.
3. Spread the shaving foam evenly over the entire window pane with your hand or a cloth.
4. Leave it on for about a minute, then polish it off with a clean, dry cloth until the glass is clear and streak-free.
The result should be a clear window with an invisible protective layer against condensation.
5. The science behind how this trick stops condensation
The most important ingredient in shaving foam that makes this trick effective is stearic acid. Stearic acid is a type of saturated fatty acid that acts as a surfactant – a substance that reduces surface tension. When applied to a window, it creates a thin, invisible film that repels water.
This film prevents moisture in the air from settling and condensing on the window surface, effectively keeping it clean and free of ice. It’s a simple example of how to use chemistry to solve a common household problem, by creating a barrier that moisture can’t easily penetrate.
6. How This Hack Compares to Viral TikTok Window Fixes In recent years, TikTok has become a hub for DIY tips and tricks
, offering a variety of solutions for window condensation, from using salt to absorb moisture to applying plastic film for insulation. While some of these methods can be effective, they often require more time, effort, or materials.
My grandmother’s shaving cream trick stands out thanks to its simplicity and speed. It does not require any special purchases or extensive installation, making it an attractive option for those looking for a quick solution without any hassle.
7. Where it works best: Rooms, window types, and climate
This trick is especially effective in bathrooms and kitchens, where humidity tends to be higher due to activities like showering and cooking. It is also beneficial for single-pane windows, which are more prone to condensation than their double-glazed windows.
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