4 Why does skin become dehydrated? 
More or less inevitable, there are a number of causes of dehydration: 
- Climatic factors such as a dry atmosphere (altitude, air-conditioning); 
- The use of unsuitable cleansing products, or daily cleansing with soap and water. 
- Taking certain medicines (vitamin A acid for example); 
- Exposure to the sun; 
- Certain genetic anomalies, such as ichthyosis, which looks like “crocodile skin”; 
- And above all, age. 

5 Are the hydration needs of the skin always the same? 
NO, they vary according to several factors: 
- The level of humidity in the atmosphere: for this reason you can feel tightening in the skin in an air-conditioned room, 
- Your skin type: oily skin, naturally rich in sebum, will have less dehydration problems than dry skin, because the hydrolipidic film of the surface of dry skin is often deficient. 
- Skin aging is the most important factor in dehydration. Over the years, the skin becomes increasingly less hydrated from inside.

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