have a green thumb
Certain plant species that live in tropical environments have the power to dehumidify the surrounding air. They pull water from the air to feed themselves, reducing the abundant humidity in your home. For example, the Boston fern is best in this role. It should be placed in a bright place but out of direct sunlight. If your living room has little light, a spathiphyllum is just as effective.

With the naked eye
To maintain a healthy interior, the humidity must be between 40% and 60%. If your home is above this average, you don’t need a meter, certain signs are not misleading: presence of fog on the windows, musty smell, peeling wallpaper or skirting boards, appearance of yellowish spots on the walls…