Natural remedies are able to prevent and solve many diseases of everyday life that affect our body, but they can also be helpful to reduce the effects of pollution of rooms in which you live or work. NASA, in the late '80s, studied plants and their effect on the surrounding environment, in order to create an ideal environment for astronauts. What has emerged from this study is that the plants, in addition to the very important process of photosynthesis by which plants absorb carbon dioxide and release oxygen, and beyond the undoubted ornamental role, are also able to remove toxic substances. The ficus benjamina, also known as Benjamin fig, weeping fig or Ficus tree, belonging to the Moraceae family, is a houseplant, which, in addition to a beautiful touch of green, has a role in the removal, through absorption, of toxic and carcinogenic substances such as formaldehyde and benzene. Both these substances are very dangerous pollutants for human health but can be easily found at home. Possible sources of formaldehyde are, for example, glues, varnishes, detergents, deodorants, disinfectants but also synthetic fabrics and clothing, benzene comes from cigarette smoke, chimneys, incense but also printers or building materials. The ficus benjamina has also a role in removing the dangerous cigarette smoke in a room. The plant can easily be grown in pots, it prefers bright environments but not direct exposure to light. It requires regular watering.