Our body needs humidity between 50% and 60%. When it is beyond these limits, humidity can cause health problems.

When the air is too dry, as is the case in some interior cities, but also when air conditioning is used, several inconveniences and health problems can arise. We can cite:

- Irritated or dry mucous membranes of the nose and throat
- Dry cough
- Tingling in the throat
- Dry and scaly skin
- Chapped lips
- Dry and red eyes
- Irritated airways
- Increased risk of infection
- Decrease of the body's defenses
- headaches
- General tiredness
- Difficulty concentrating
- Irritating contact lenses