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Does our skin's structure change over time?

If we take a close look at the stratum corneum (skin’s outer layer), we’ll see that the flat cells are arranged like a brick wall. These cells are built from the bottom of the epidermis to the surface of skin. These cells finally emerge on the surface of the skin as dead skin cells. This process is known as keratinization (cell turnover), and it takes about 28 days for skin to complete a cycle of cell turnover.

The dead cells found on the surface of our skin are generally not visible to the naked eye. When skin is rough, it becomes powdery and flaky because several cells gathered together and fell off. This can become a serious skin problem if moisturizing care is not diligently applied.