In one sentence, describe what the following article is about:

This should reduce the friction and allow the door to close more smoothly. Use a dry, moisturizer-free soap that leaves a powdery residue on the sides of the door.Of course, this is a gentle and temporary solution and will need to be repeated sporadically during times of humidity. One of the functions of the AC is to remove excess moisture from the air and decrease the humidity level in your home. While this can be a costly solution, it will help with your sticking doors. As the humidity in your home is lowered, the wood door will shrink in size. A dehumidifier works by sucking in air, removing the air’s moisture, and expelling the air back into the room. The main advantage of using a dehumidifier is that it is portable, which allows you to place it close to the sticking door.

Summary:
Rub the problem area with bar soap. Run your air conditioner. Invest in a dehumidifier.