Which layer of the skin is responsible for producing new cells?

The stratum germinativum, also known as the basal layer, is the foundational layer of the epidermis responsible for producing new skin cells. This layer contains actively dividing keratinocytes, which are essential for skin regeneration. As these cells multiply, they push older cells towards the surface of the skin. This process is crucial for maintaining healthy skin, as it allows the body to replace cells that are lost through natural wear and potential damage.

The stratum corneum, while it plays a vital role in providing a protective barrier, consists of dead keratinized cells that have already undergone the process of differentiation and are not involved in cell production. The stratum granulosum contributes to the process of keratinization, where cells begin to lose their nuclei and accumulate keratin, but it does not produce new cells. The stratum spinosum contains keratinocytes that are more differentiated and provide strength and flexibility to the skin, but the main function of new cell production is designated to the stratum germinativum.