As we turn our heating on in the winter, the warmth clashes with the cold air outside and creates moisture which can often show up on windows.
Condensation becomes a real problem at this time of year. And if left untreated, the condensation can turn to mould which can be incredibly damaging to your health.
While condensation can form anywhere, many are waking up in the morning to find out they have a build-up of moisture on their bedroom windows, as reported in the Mirror.
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Popular TikTok user @ thatpropertyguy who shares property tips and advice shared a video explaining this phenomenon.
He said: "A lot of people are saying that they always get condensation on one window in the morning. I guarantee it's going to be your bedroom window." Going on to explain why this happens, The Property Guy said: "Overnight the moisture from your breath is going to collect on the cold surface of the window," adding that it's worse if you keep your door closed.
The TikToker then demonstrated that it's the same principle when you breathe hot air straight onto the window and a foggy layer of moisture sticks to it.
Damp can lead to mould, which in turn make it more likely you'll develop respiratory problems, infections, allergies or asthma, according to the NHS.
The Property Guy went on to share some ways to prevent condensation forming in the bedroom. He explained: "Limit it from happening by opening a window or get a dehumidifier."
People took to the comments to share their own tips, with one person saying: "Most windows will have vents at the top or bottom. They should always be open. It allows for passive ventilation and stops condensation."
Another said: "Triple glaze option is best for replacement windows." A third said: "Get some humidity loving plants. It helps."
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