4. Accumulation of dead skin cells on the surface of your skin
Our tissues naturally renew themselves constantly so they stay fresh and young, and as functional as possible. Ever day, millions of cells in our body are born and die following a fixed and complex process called mitosis. In the case of our skin, our cells are subjected to constant erosion and wearing from the elements, such as the wind, the sunlight, temperature, friction, tearing and many others, so they need to get renewed constantly so our skin stays healthy and strong.
Newer skin cells come from the deepest layers of our skin, while the cells on the surface are the oldest. They all eventually die and fall off, but they can stick to the surface of our skin and accumulate. If they do that, an aren’t properly peeled off or washed away, they can clog the pores and conducts of the sebaceous glands and cause acne.