When you place a mirror opposite or at an angle to a window, it catches incoming daylight and bounces it further into the room. Instead of light hitting one wall and stopping, it’s reflected, brightening parts of the room that would usually stay dim.
In darker rooms or spaces with only one small window, this can make a noticeable difference. The mirror gives you a second “fake window” – not with a view, but with light and a sense of openness.
It can also reflect greenery from outside, making the inside feel more connected to nature. Just be careful of what else is reflected; you don’t want to double any clutter.
Used thoughtfully, a mirror becomes more than decoration; it becomes a functional light tool.