Shenzhen has a subtropical climate, with high humidity and warm temperature all year round, which makes the skin sweat more easily and increases oil secretion. Hot and humid climate may also increase the risk of skin infections, such as acne and fungal infections. So from a medical point of view, the soil and water in Shenzhen are not ideal for the skin.

The above information is for reference only, and the specific conclusions may vary from person to person.