Pollution
![Pollution](https://betahealthy.com/wp-content/uploads/2021/06/Pollution.jpg)
Pollution is hazardous not only for the environment, but also for human health. Doctors believe that acne is more common in people living in urban areas than people living in rural areas. The skin of people living in urban areas produces more sebum. The dirt particles in the skin, sometimes diffuse into deeper skin layers which damage the skin’s natural defense capacity. Also, it is difficult to fight exposure of free radicals in the environment