Yes, the outer layer of your skin is made up of dead cells. These cells, called keratinocytes, are constantly being shed and replaced by new cells from the layers below. The outermost 25 to 30 layers of your skin are composed of these dead cells, which serve as a protective barrier against the environment. They help to keep water in and chemicals out, protecting the delicate living cells underneath.
While the outer layer is dead, the living cells in the lower layers of your skin are responsible for sensing touch and sending signals to your brain. This is why you can still feel things even though the outer layer is made of dead cells.
In short, while the outer layer of your skin is made of dead cells, the living cells beneath play a crucial role in protecting and sensing the environment.
